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_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-invgen/half_2_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-08 03:30:35,107 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-08 03:30:35,110 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-08 03:30:35,122 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-08 03:30:35,122 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-08 03:30:35,123 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-08 03:30:35,124 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-08 03:30:35,127 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-08 03:30:35,129 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-08 03:30:35,130 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-08 03:30:35,131 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-08 03:30:35,131 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-08 03:30:35,132 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-08 03:30:35,133 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-08 03:30:35,134 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-08 03:30:35,135 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-08 03:30:35,136 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-08 03:30:35,138 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-08 03:30:35,140 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-08 03:30:35,142 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-08 03:30:35,143 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-08 03:30:35,145 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-08 03:30:35,148 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-08-08 03:30:35,158 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf [2018-08-08 03:30:35,174 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-08 03:30:35,175 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-08 03:30:35,176 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-08 03:30:35,176 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-08 03:30:35,176 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-08 03:30:35,177 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-08 03:30:35,177 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-08 03:30:35,177 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-08 03:30:35,177 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-08 03:30:35,178 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-08 03:30:35,178 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-08 03:30:35,179 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-08 03:30:35,179 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-08 03:30:35,179 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-08 03:30:35,180 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-08 03:30:35,180 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-08 03:30:35,180 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-08 03:30:35,180 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-08 03:30:35,181 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-08 03:30:35,181 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-08 03:30:35,181 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-08 03:30:35,182 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-08 03:30:35,182 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-08 03:30:35,182 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-08 03:30:35,182 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-08 03:30:35,183 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-08 03:30:35,183 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-08 03:30:35,183 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-08-08 03:30:35,183 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-08 03:30:35,184 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-08 03:30:35,184 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-08 03:30:35,184 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-08 03:30:35,184 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-08 03:30:35,228 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-08 03:30:35,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-08 03:30:35,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-08 03:30:35,249 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-08 03:30:35,249 INFO L276 PluginConnector]: CDTParser initialized [2018-08-08 03:30:35,250 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/half_2_true-unreach-call_true-termination.i [2018-08-08 03:30:35,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64c507bad/4690fe752b434844ba0a6501ebf53c4d/FLAGbb388dcae [2018-08-08 03:30:35,747 INFO L276 CDTParser]: Found 1 translation units. [2018-08-08 03:30:35,748 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/half_2_true-unreach-call_true-termination.i [2018-08-08 03:30:35,754 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64c507bad/4690fe752b434844ba0a6501ebf53c4d/FLAGbb388dcae [2018-08-08 03:30:35,768 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64c507bad/4690fe752b434844ba0a6501ebf53c4d [2018-08-08 03:30:35,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-08 03:30:35,784 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-08 03:30:35,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-08 03:30:35,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-08 03:30:35,793 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-08 03:30:35,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 03:30:35" (1/1) ... [2018-08-08 03:30:35,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14630aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:30:35, skipping insertion in model container [2018-08-08 03:30:35,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 03:30:35" (1/1) ... [2018-08-08 03:30:35,945 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-08 03:30:35,983 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 03:30:35,997 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-08 03:30:36,003 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 03:30:36,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:30:36 WrapperNode [2018-08-08 03:30:36,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-08 03:30:36,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-08 03:30:36,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-08 03:30:36,019 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-08 03:30:36,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:30:36" (1/1) ... [2018-08-08 03:30:36,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:30:36" (1/1) ... [2018-08-08 03:30:36,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-08 03:30:36,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-08 03:30:36,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-08 03:30:36,050 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-08 03:30:36,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:30:36" (1/1) ... [2018-08-08 03:30:36,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:30:36" (1/1) ... [2018-08-08 03:30:36,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:30:36" (1/1) ... [2018-08-08 03:30:36,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:30:36" (1/1) ... [2018-08-08 03:30:36,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:30:36" (1/1) ... [2018-08-08 03:30:36,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:30:36" (1/1) ... [2018-08-08 03:30:36,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:30:36" (1/1) ... [2018-08-08 03:30:36,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-08 03:30:36,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-08 03:30:36,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-08 03:30:36,082 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-08 03:30:36,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:30:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-08 03:30:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-08 03:30:36,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-08 03:30:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_half___true_unreach_call_true_termination_i____VERIFIER_assert [2018-08-08 03:30:36,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_half___true_unreach_call_true_termination_i____VERIFIER_assert [2018-08-08 03:30:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-08 03:30:36,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-08 03:30:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-08 03:30:36,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-08 03:30:36,690 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-08 03:30:36,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 03:30:36 BoogieIcfgContainer [2018-08-08 03:30:36,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-08 03:30:36,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-08 03:30:36,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-08 03:30:36,695 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-08 03:30:36,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.08 03:30:35" (1/3) ... [2018-08-08 03:30:36,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487936ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 03:30:36, skipping insertion in model container [2018-08-08 03:30:36,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:30:36" (2/3) ... [2018-08-08 03:30:36,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487936ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 03:30:36, skipping insertion in model container [2018-08-08 03:30:36,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 03:30:36" (3/3) ... [2018-08-08 03:30:36,698 INFO L112 eAbstractionObserver]: Analyzing ICFG half_2_true-unreach-call_true-termination.i [2018-08-08 03:30:36,709 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-08 03:30:36,718 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-08 03:30:36,784 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-08 03:30:36,785 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-08 03:30:36,785 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-08 03:30:36,786 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-08 03:30:36,786 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-08 03:30:36,786 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-08 03:30:36,786 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-08 03:30:36,786 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-08 03:30:36,787 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-08 03:30:36,806 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-08-08 03:30:36,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-08-08 03:30:36,813 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 03:30:36,814 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 03:30:36,815 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_half___true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 03:30:36,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1251515193, now seen corresponding path program 1 times [2018-08-08 03:30:36,824 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 03:30:36,825 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-08-08 03:30:36,827 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [19], [31], [33], [37], [43], [51], [52], [53], [55] [2018-08-08 03:30:36,884 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-08-08 03:30:36,884 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 03:30:36,970 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 03:30:36,971 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 5 variables. [2018-08-08 03:30:36,998 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 03:30:37,060 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 33.33% of their original sizes. [2018-08-08 03:30:37,061 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 03:30:37,126 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 03:30:37,128 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 03:30:37,129 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-08-08 03:30:37,129 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 03:30:37,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-08 03:30:37,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-08 03:30:37,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-08 03:30:37,157 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2018-08-08 03:30:37,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 03:30:37,309 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2018-08-08 03:30:37,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-08 03:30:37,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-08-08 03:30:37,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 03:30:37,319 INFO L225 Difference]: With dead ends: 50 [2018-08-08 03:30:37,320 INFO L226 Difference]: Without dead ends: 26 [2018-08-08 03:30:37,324 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-08 03:30:37,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-08-08 03:30:37,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2018-08-08 03:30:37,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-08-08 03:30:37,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-08-08 03:30:37,375 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2018-08-08 03:30:37,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 03:30:37,376 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-08-08 03:30:37,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-08 03:30:37,376 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-08-08 03:30:37,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-08-08 03:30:37,377 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 03:30:37,378 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 03:30:37,380 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_half___true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 03:30:37,381 INFO L82 PathProgramCache]: Analyzing trace with hash 129242268, now seen corresponding path program 1 times [2018-08-08 03:30:37,381 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 03:30:37,381 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-08-08 03:30:37,381 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [19], [23], [27], [33], [37], [43], [51], [52], [53], [55] [2018-08-08 03:30:37,383 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-08-08 03:30:37,384 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 03:30:37,418 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-08-08 03:30:37,448 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-08-08 03:30:37,449 INFO L272 AbstractInterpreter]: Visited 15 different actions 15 times. Never merged. Never widened. Never found a fixpoint. Largest state had 5 variables. [2018-08-08 03:30:37,470 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-08-08 03:30:37,485 WARN L205 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-08-08 03:30:37,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.08 03:30:37 BoogieIcfgContainer [2018-08-08 03:30:37,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-08 03:30:37,486 INFO L168 Benchmark]: Toolchain (without parser) took 1702.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -774.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-08-08 03:30:37,488 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. [2018-08-08 03:30:37,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.49 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. [2018-08-08 03:30:37,490 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.12 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. [2018-08-08 03:30:37,490 INFO L168 Benchmark]: Boogie Preprocessor took 25.61 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. [2018-08-08 03:30:37,491 INFO L168 Benchmark]: RCFGBuilder took 615.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -818.9 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-08-08 03:30:37,492 INFO L168 Benchmark]: TraceAbstraction took 793.73 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: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-08-08 03:30:37,497 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 232.49 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 30.12 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 25.61 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 615.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -818.9 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 793.73 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: 33.4 MB). Peak memory consumption was 33.4 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 n,i,k; [L12] n = __VERIFIER_nondet_int() [L13] COND FALSE !(!(n <= 1000000)) [L14] k = n [L15] i = 0 [L16] COND FALSE !(i < n) [L20] int j = 0; [L21] COND TRUE j < n/2 [L22] CALL __VERIFIER_assert(k > 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. UNKNOWN Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 27 SDslu, 18 SDs, 0 SdLazy, 15 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9692307692307692 AbsIntWeakeningRatio, 0.6153846153846154 AbsIntAvgWeakeningVarsNumRemoved, 0.8461538461538461 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 7 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/half_2_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-08_03-30-37-509.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/half_2_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-08_03-30-37-509.csv Received shutdown request...