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_CON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-invgen/seq_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 17:54:30,130 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 17:54:30,132 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 17:54:30,145 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 17:54:30,145 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 17:54:30,146 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 17:54:30,148 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 17:54:30,157 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 17:54:30,160 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 17:54:30,161 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 17:54:30,162 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 17:54:30,162 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 17:54:30,163 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 17:54:30,164 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 17:54:30,165 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 17:54:30,166 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 17:54:30,167 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 17:54:30,169 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 17:54:30,171 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 17:54:30,173 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 17:54:30,174 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 17:54:30,176 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 17:54:30,178 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 17:54:30,179 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 17:54:30,179 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 17:54:30,180 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 17:54:30,181 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 17:54:30,182 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 17:54:30,183 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 17:54:30,184 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 17:54:30,185 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 17:54:30,185 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-11 17:54:30,188 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf [2018-09-11 17:54:30,207 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 17:54:30,207 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 17:54:30,208 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 17:54:30,209 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 17:54:30,210 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 17:54:30,210 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 17:54:30,210 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 17:54:30,210 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-11 17:54:30,210 INFO L133 SettingsManager]: * Abstract domain=CongruenceDomain [2018-09-11 17:54:30,211 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 17:54:30,211 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 17:54:30,211 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 17:54:30,212 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 17:54:30,213 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 17:54:30,213 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 17:54:30,213 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 17:54:30,213 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 17:54:30,213 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 17:54:30,214 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 17:54:30,214 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 17:54:30,216 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 17:54:30,216 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 17:54:30,216 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 17:54:30,216 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 17:54:30,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 17:54:30,217 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 17:54:30,217 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 17:54:30,217 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 17:54:30,217 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 17:54:30,218 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 17:54:30,218 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 17:54:30,218 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 17:54:30,218 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 17:54:30,219 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 17:54:30,294 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 17:54:30,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 17:54:30,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 17:54:30,325 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 17:54:30,325 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 17:54:30,326 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/seq_true-unreach-call_true-termination.i [2018-09-11 17:54:30,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb9b0d505/1ff7748e7e5e4b51aa36b9ca2bee3256/FLAG0bac8f1d5 [2018-09-11 17:54:30,861 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 17:54:30,862 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/seq_true-unreach-call_true-termination.i [2018-09-11 17:54:30,869 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb9b0d505/1ff7748e7e5e4b51aa36b9ca2bee3256/FLAG0bac8f1d5 [2018-09-11 17:54:30,894 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb9b0d505/1ff7748e7e5e4b51aa36b9ca2bee3256 [2018-09-11 17:54:30,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 17:54:30,911 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 17:54:30,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 17:54:30,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 17:54:30,923 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 17:54:30,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 05:54:30" (1/1) ... [2018-09-11 17:54:30,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3b7ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:30, skipping insertion in model container [2018-09-11 17:54:30,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 05:54:30" (1/1) ... [2018-09-11 17:54:31,101 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 17:54:31,142 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 17:54:31,161 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 17:54:31,175 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 17:54:31,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:31 WrapperNode [2018-09-11 17:54:31,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 17:54:31,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 17:54:31,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 17:54:31,193 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 17:54:31,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:31" (1/1) ... [2018-09-11 17:54:31,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:31" (1/1) ... [2018-09-11 17:54:31,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 17:54:31,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 17:54:31,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 17:54:31,216 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 17:54:31,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:31" (1/1) ... [2018-09-11 17:54:31,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:31" (1/1) ... [2018-09-11 17:54:31,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:31" (1/1) ... [2018-09-11 17:54:31,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:31" (1/1) ... [2018-09-11 17:54:31,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:31" (1/1) ... [2018-09-11 17:54:31,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:31" (1/1) ... [2018-09-11 17:54:31,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:31" (1/1) ... [2018-09-11 17:54:31,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 17:54:31,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 17:54:31,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 17:54:31,240 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 17:54:31,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:31" (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 [2018-09-11 17:54:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 17:54:31,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 17:54:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 17:54:31,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 17:54:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 17:54:31,307 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 17:54:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_seq_true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 17:54:31,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_seq_true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 17:54:31,745 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 17:54:31,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 05:54:31 BoogieIcfgContainer [2018-09-11 17:54:31,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 17:54:31,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 17:54:31,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 17:54:31,751 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 17:54:31,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 05:54:30" (1/3) ... [2018-09-11 17:54:31,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fea875f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 05:54:31, skipping insertion in model container [2018-09-11 17:54:31,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:54:31" (2/3) ... [2018-09-11 17:54:31,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fea875f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 05:54:31, skipping insertion in model container [2018-09-11 17:54:31,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 05:54:31" (3/3) ... [2018-09-11 17:54:31,755 INFO L112 eAbstractionObserver]: Analyzing ICFG seq_true-unreach-call_true-termination.i [2018-09-11 17:54:31,765 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 17:54:31,775 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 17:54:31,822 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 17:54:31,823 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 17:54:31,823 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 17:54:31,823 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 17:54:31,823 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 17:54:31,823 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 17:54:31,823 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 17:54:31,824 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 17:54:31,824 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 17:54:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-09-11 17:54:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-11 17:54:31,848 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 17:54:31,849 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 17:54:31,850 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_seq_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 17:54:31,856 INFO L82 PathProgramCache]: Analyzing trace with hash 301890663, now seen corresponding path program 1 times [2018-09-11 17:54:31,859 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 17:54:31,860 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-09-11 17:54:31,862 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [24], [26], [38], [40], [44], [50], [57], [60], [62], [68], [69], [70], [72] [2018-09-11 17:54:31,894 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-11 17:54:31,895 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 17:54:31,960 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 17:54:31,962 INFO L272 AbstractInterpreter]: Visited 8 different actions 8 times. Never merged. Never widened. Never found a fixpoint. Largest state had 8 variables. [2018-09-11 17:54:31,976 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 17:54:32,019 INFO L232 lantSequenceWeakener]: Weakened 3 states. On average, predicates are now at 50% of their original sizes. [2018-09-11 17:54:32,019 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 17:54:32,034 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 17:54:32,035 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 17:54:32,036 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-11 17:54:32,036 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 17:54:32,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-11 17:54:32,046 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-11 17:54:32,047 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 17:54:32,050 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2018-09-11 17:54:32,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 17:54:32,107 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2018-09-11 17:54:32,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-11 17:54:32,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-09-11 17:54:32,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 17:54:32,120 INFO L225 Difference]: With dead ends: 57 [2018-09-11 17:54:32,120 INFO L226 Difference]: Without dead ends: 33 [2018-09-11 17:54:32,124 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 17:54:32,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-11 17:54:32,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2018-09-11 17:54:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-11 17:54:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-09-11 17:54:32,179 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 17 [2018-09-11 17:54:32,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 17:54:32,180 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-09-11 17:54:32,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-11 17:54:32,180 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-09-11 17:54:32,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-11 17:54:32,181 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 17:54:32,181 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 17:54:32,182 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_seq_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 17:54:32,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1130037681, now seen corresponding path program 1 times [2018-09-11 17:54:32,182 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 17:54:32,183 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-11 17:54:32,183 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [20], [26], [30], [34], [40], [44], [50], [57], [60], [62], [68], [69], [70], [72] [2018-09-11 17:54:32,184 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-11 17:54:32,185 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 17:54:32,205 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-11 17:54:32,207 INFO L272 AbstractInterpreter]: Visited 19 different actions 19 times. Never merged. Never widened. Never found a fixpoint. Largest state had 8 variables. [2018-09-11 17:54:32,224 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-11 17:54:32,240 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-11 17:54:32,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 05:54:32 BoogieIcfgContainer [2018-09-11 17:54:32,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-11 17:54:32,241 INFO L168 Benchmark]: Toolchain (without parser) took 1333.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -744.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2018-09-11 17:54:32,243 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-09-11 17:54:32,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.98 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. [2018-09-11 17:54:32,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.96 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. [2018-09-11 17:54:32,246 INFO L168 Benchmark]: Boogie Preprocessor took 23.54 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. [2018-09-11 17:54:32,246 INFO L168 Benchmark]: RCFGBuilder took 506.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-09-11 17:54:32,247 INFO L168 Benchmark]: TraceAbstraction took 492.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2018-09-11 17:54:32,252 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 279.98 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 22.96 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 23.54 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 506.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 492.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: 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: [L11] int n0, n1; [L12] int i0 = 0; [L13] int k = 0; [L14] n0 = __VERIFIER_nondet_int() [L15] n1 = __VERIFIER_nondet_int() [L16] COND FALSE !(!(-1000000 <= n0 && n0 < 1000000)) [L17] COND FALSE !(!(-1000000 <= n1 && n1 < 1000000)) [L18] COND FALSE !(i0 < n0) [L22] int i1 = 0; [L23] COND FALSE !(i1 < n1) [L27] int j1 = 0; [L28] COND TRUE j1 < n0 + n1 [L29] CALL __VERIFIER_assert(k > 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. UNKNOWN Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 12 SDslu, 23 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.5 AbsIntAvgWeakeningVarsNumRemoved, 0.1875 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 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/seq_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-11_17-54-32-266.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/seq_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-11_17-54-32-266.csv Received shutdown request...