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_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 13:06:47,712 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 13:06:47,715 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 13:06:47,733 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 13:06:47,733 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 13:06:47,735 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 13:06:47,737 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 13:06:47,739 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 13:06:47,742 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 13:06:47,744 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 13:06:47,746 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 13:06:47,746 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 13:06:47,747 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 13:06:47,756 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 13:06:47,757 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 13:06:47,758 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 13:06:47,760 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 13:06:47,764 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 13:06:47,769 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 13:06:47,770 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 13:06:47,772 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 13:06:47,774 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 13:06:47,778 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 13:06:47,778 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 13:06:47,779 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 13:06:47,780 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 13:06:47,781 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 13:06:47,781 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 13:06:47,782 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 13:06:47,783 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 13:06:47,783 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 13:06:47,784 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 13:06:47,784 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 13:06:47,784 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 13:06:47,785 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 13:06:47,786 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 13:06:47,786 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-15 13:06:47,802 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 13:06:47,803 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 13:06:47,804 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 13:06:47,804 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 13:06:47,804 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 13:06:47,804 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 13:06:47,805 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 13:06:47,805 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 13:06:47,805 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 13:06:47,805 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-15 13:06:47,805 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 13:06:47,806 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 13:06:47,806 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 13:06:47,807 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 13:06:47,807 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 13:06:47,807 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 13:06:47,807 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 13:06:47,807 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 13:06:47,807 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 13:06:47,808 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 13:06:47,808 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 13:06:47,808 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 13:06:47,808 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 13:06:47,808 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 13:06:47,809 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 13:06:47,809 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 13:06:47,809 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 13:06:47,809 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 13:06:47,809 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 13:06:47,810 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 13:06:47,810 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 13:06:47,810 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 13:06:47,810 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 13:06:47,810 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 13:06:47,857 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 13:06:47,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 13:06:47,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 13:06:47,876 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 13:06:47,876 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 13:06:47,877 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call1.i [2018-09-15 13:06:48,234 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/662d93197/0e42f00143434820a20df0edf03d82b4/FLAG882da70b1 [2018-09-15 13:06:48,379 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 13:06:48,380 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call1.i [2018-09-15 13:06:48,386 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/662d93197/0e42f00143434820a20df0edf03d82b4/FLAG882da70b1 [2018-09-15 13:06:48,403 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/662d93197/0e42f00143434820a20df0edf03d82b4 [2018-09-15 13:06:48,415 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 13:06:48,418 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 13:06:48,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 13:06:48,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 13:06:48,426 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 13:06:48,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 01:06:48" (1/1) ... [2018-09-15 13:06:48,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e5782b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:48, skipping insertion in model container [2018-09-15 13:06:48,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 01:06:48" (1/1) ... [2018-09-15 13:06:48,444 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 13:06:48,645 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 13:06:48,667 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 13:06:48,671 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 13:06:48,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:48 WrapperNode [2018-09-15 13:06:48,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 13:06:48,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 13:06:48,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 13:06:48,688 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 13:06:48,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:48" (1/1) ... [2018-09-15 13:06:48,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:48" (1/1) ... [2018-09-15 13:06:48,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 13:06:48,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 13:06:48,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 13:06:48,730 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 13:06:48,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:48" (1/1) ... [2018-09-15 13:06:48,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:48" (1/1) ... [2018-09-15 13:06:48,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:48" (1/1) ... [2018-09-15 13:06:48,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:48" (1/1) ... [2018-09-15 13:06:48,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:48" (1/1) ... [2018-09-15 13:06:48,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:48" (1/1) ... [2018-09-15 13:06:48,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:48" (1/1) ... [2018-09-15 13:06:48,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 13:06:48,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 13:06:48,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 13:06:48,757 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 13:06:48,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:48" (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 13:06:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 13:06:48,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 13:06:48,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 13:06:48,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 13:06:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 13:06:48,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 13:06:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 13:06:48,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 13:06:49,165 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 13:06:49,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 01:06:49 BoogieIcfgContainer [2018-09-15 13:06:49,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 13:06:49,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 13:06:49,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 13:06:49,170 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 13:06:49,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 01:06:48" (1/3) ... [2018-09-15 13:06:49,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2313abac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 01:06:49, skipping insertion in model container [2018-09-15 13:06:49,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:48" (2/3) ... [2018-09-15 13:06:49,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2313abac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 01:06:49, skipping insertion in model container [2018-09-15 13:06:49,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 01:06:49" (3/3) ... [2018-09-15 13:06:49,174 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call1.i [2018-09-15 13:06:49,184 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 13:06:49,191 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 13:06:49,236 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 13:06:49,237 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 13:06:49,237 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 13:06:49,237 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 13:06:49,237 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 13:06:49,237 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 13:06:49,237 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 13:06:49,237 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 13:06:49,238 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 13:06:49,255 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-09-15 13:06:49,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-15 13:06:49,261 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 13:06:49,262 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 13:06:49,263 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 13:06:49,269 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-09-15 13:06:49,271 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 13:06:49,272 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-15 13:06:49,274 INFO L202 CegarAbsIntRunner]: [0], [4], [16], [20], [23], [25], [31], [32], [33], [35] [2018-09-15 13:06:49,309 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 13:06:49,309 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 13:06:49,362 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 13:06:49,364 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 1 variables. [2018-09-15 13:06:49,379 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 13:06:49,416 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-15 13:06:49,417 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 13:06:49,451 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 13:06:49,453 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 13:06:49,453 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 13:06:49,454 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 13:06:49,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 13:06:49,466 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 13:06:49,467 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 13:06:49,470 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-09-15 13:06:49,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 13:06:49,561 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-09-15 13:06:49,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 13:06:49,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-09-15 13:06:49,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 13:06:49,575 INFO L225 Difference]: With dead ends: 31 [2018-09-15 13:06:49,575 INFO L226 Difference]: Without dead ends: 14 [2018-09-15 13:06:49,580 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 13:06:49,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-15 13:06:49,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-15 13:06:49,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-15 13:06:49,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-09-15 13:06:49,636 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2018-09-15 13:06:49,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 13:06:49,637 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-09-15 13:06:49,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 13:06:49,638 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-09-15 13:06:49,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-15 13:06:49,638 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 13:06:49,639 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 13:06:49,639 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 13:06:49,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1625028318, now seen corresponding path program 1 times [2018-09-15 13:06:49,640 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 13:06:49,640 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-09-15 13:06:49,641 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [20], [23], [25], [31], [32], [33], [35] [2018-09-15 13:06:49,643 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 13:06:49,643 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 13:06:49,658 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 13:06:50,129 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 13:06:50,130 INFO L272 AbstractInterpreter]: Visited 12 different actions 61 times. Merged at 3 different actions 21 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-09-15 13:06:50,173 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 13:06:50,192 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 13:06:50,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 01:06:50 BoogieIcfgContainer [2018-09-15 13:06:50,193 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 13:06:50,194 INFO L168 Benchmark]: Toolchain (without parser) took 1777.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.5 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -653.5 MB). Peak memory consumption was 102.0 MB. Max. memory is 7.1 GB. [2018-09-15 13:06:50,198 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 13:06:50,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.25 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 13:06:50,202 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.43 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 13:06:50,203 INFO L168 Benchmark]: Boogie Preprocessor took 26.66 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 13:06:50,204 INFO L168 Benchmark]: RCFGBuilder took 409.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -807.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-09-15 13:06:50,205 INFO L168 Benchmark]: TraceAbstraction took 1025.93 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 143.4 MB). Peak memory consumption was 143.4 MB. Max. memory is 7.1 GB. [2018-09-15 13:06:50,213 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 268.25 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 41.43 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 26.66 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 409.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -807.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1025.93 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 143.4 MB). Peak memory consumption was 143.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: 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: [L9] unsigned int x = 0; [L10] COND TRUE x < 0x0fffffff [L11] x += 2 [L10] COND FALSE !(x < 0x0fffffff) [L13] CALL __VERIFIER_assert(!(x % 2)) [L3] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. UNKNOWN Result, 0.9s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 1 SDslu, 15 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.3333333333333333 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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/simple_true-unreach-call1.i_svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_13-06-50-231.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/simple_true-unreach-call1.i_svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_13-06-50-231.csv Received shutdown request...