java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 19:41:06,838 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 19:41:06,840 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 19:41:06,852 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 19:41:06,852 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 19:41:06,853 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 19:41:06,855 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 19:41:06,856 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 19:41:06,858 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 19:41:06,859 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 19:41:06,860 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 19:41:06,860 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 19:41:06,861 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 19:41:06,862 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 19:41:06,863 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 19:41:06,864 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 19:41:06,865 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 19:41:06,867 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 19:41:06,869 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 19:41:06,870 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 19:41:06,871 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 19:41:06,872 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 19:41:06,875 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-11 19:41:06,883 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf [2018-09-11 19:41:06,903 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 19:41:06,904 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 19:41:06,905 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 19:41:06,905 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 19:41:06,906 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 19:41:06,906 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 19:41:06,906 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 19:41:06,906 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 19:41:06,909 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-11 19:41:06,909 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 19:41:06,909 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 19:41:06,909 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 19:41:06,910 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 19:41:06,910 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 19:41:06,911 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 19:41:06,911 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 19:41:06,911 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 19:41:06,911 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 19:41:06,911 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 19:41:06,912 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 19:41:06,912 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 19:41:06,912 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 19:41:06,912 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 19:41:06,913 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 19:41:06,913 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 19:41:06,913 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 19:41:06,913 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 19:41:06,913 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 19:41:06,914 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 19:41:06,914 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 19:41:06,914 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 19:41:06,914 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 19:41:06,914 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 19:41:06,915 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 19:41:06,961 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 19:41:06,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 19:41:06,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 19:41:06,983 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 19:41:06,983 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 19:41:06,984 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i [2018-09-11 19:41:07,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf534bab8/4b3d416cb7ca434193b59ca10ac13407/FLAG6325f6524 [2018-09-11 19:41:07,511 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 19:41:07,512 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i [2018-09-11 19:41:07,523 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf534bab8/4b3d416cb7ca434193b59ca10ac13407/FLAG6325f6524 [2018-09-11 19:41:07,541 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf534bab8/4b3d416cb7ca434193b59ca10ac13407 [2018-09-11 19:41:07,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 19:41:07,560 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 19:41:07,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 19:41:07,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 19:41:07,575 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 19:41:07,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:41:07" (1/1) ... [2018-09-11 19:41:07,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b38b8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:07, skipping insertion in model container [2018-09-11 19:41:07,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:41:07" (1/1) ... [2018-09-11 19:41:07,754 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 19:41:07,790 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:41:07,808 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 19:41:07,814 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:41:07,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:07 WrapperNode [2018-09-11 19:41:07,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 19:41:07,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 19:41:07,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 19:41:07,830 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 19:41:07,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:07" (1/1) ... [2018-09-11 19:41:07,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:07" (1/1) ... [2018-09-11 19:41:07,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 19:41:07,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 19:41:07,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 19:41:07,853 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 19:41:07,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:07" (1/1) ... [2018-09-11 19:41:07,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:07" (1/1) ... [2018-09-11 19:41:07,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:07" (1/1) ... [2018-09-11 19:41:07,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:07" (1/1) ... [2018-09-11 19:41:07,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:07" (1/1) ... [2018-09-11 19:41:07,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:07" (1/1) ... [2018-09-11 19:41:07,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:07" (1/1) ... [2018-09-11 19:41:07,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 19:41:07,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 19:41:07,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 19:41:07,883 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 19:41:07,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:07" (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 19:41:07,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 19:41:07,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 19:41:07,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 19:41:07,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 19:41:07,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 19:41:07,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 19:41:07,957 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_bhmr_____true_unreach_call_true_termination_c_i____VERIFIER_assert [2018-09-11 19:41:07,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_bhmr_____true_unreach_call_true_termination_c_i____VERIFIER_assert [2018-09-11 19:41:08,350 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 19:41:08,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:41:08 BoogieIcfgContainer [2018-09-11 19:41:08,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 19:41:08,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 19:41:08,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 19:41:08,365 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 19:41:08,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:41:07" (1/3) ... [2018-09-11 19:41:08,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b0f689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:41:08, skipping insertion in model container [2018-09-11 19:41:08,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:07" (2/3) ... [2018-09-11 19:41:08,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b0f689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:41:08, skipping insertion in model container [2018-09-11 19:41:08,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:41:08" (3/3) ... [2018-09-11 19:41:08,375 INFO L112 eAbstractionObserver]: Analyzing ICFG bhmr2007_true-unreach-call_true-termination.c.i [2018-09-11 19:41:08,386 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 19:41:08,396 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 19:41:08,448 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 19:41:08,449 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 19:41:08,450 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 19:41:08,450 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 19:41:08,450 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 19:41:08,450 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 19:41:08,450 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 19:41:08,451 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 19:41:08,451 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 19:41:08,470 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-09-11 19:41:08,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-11 19:41:08,477 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:41:08,478 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:41:08,479 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_bhmr_____true_unreach_call_true_termination_c_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:41:08,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1421497933, now seen corresponding path program 1 times [2018-09-11 19:41:08,488 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:41:08,489 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-11 19:41:08,491 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [27], [32], [35], [37], [43], [44], [45], [47] [2018-09-11 19:41:08,548 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:41:08,548 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:41:08,598 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:41:08,599 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 5 variables. [2018-09-11 19:41:08,609 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:41:08,661 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 25% of their original sizes. [2018-09-11 19:41:08,662 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:41:08,728 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:41:08,730 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:41:08,730 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-11 19:41:08,731 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:41:08,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-11 19:41:08,741 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-11 19:41:08,741 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-11 19:41:08,744 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2018-09-11 19:41:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:41:08,896 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2018-09-11 19:41:08,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-11 19:41:08,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-09-11 19:41:08,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:41:08,909 INFO L225 Difference]: With dead ends: 43 [2018-09-11 19:41:08,909 INFO L226 Difference]: Without dead ends: 19 [2018-09-11 19:41:08,912 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-11 19:41:08,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-11 19:41:08,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-09-11 19:41:08,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-11 19:41:08,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-09-11 19:41:08,950 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2018-09-11 19:41:08,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:41:08,951 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-09-11 19:41:08,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-11 19:41:08,951 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-09-11 19:41:08,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-11 19:41:08,952 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:41:08,952 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:41:08,953 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_bhmr_____true_unreach_call_true_termination_c_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:41:08,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1574385422, now seen corresponding path program 1 times [2018-09-11 19:41:08,954 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:41:08,954 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-09-11 19:41:08,955 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [32], [35], [37], [43], [44], [45], [47] [2018-09-11 19:41:08,956 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:41:08,957 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:41:08,997 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-11 19:41:08,997 INFO L272 AbstractInterpreter]: Visited 12 different actions 12 times. Never merged. Never widened. Never found a fixpoint. Largest state had 5 variables. [2018-09-11 19:41:09,003 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-11 19:41:09,022 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-11 19:41:09,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 07:41:09 BoogieIcfgContainer [2018-09-11 19:41:09,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-11 19:41:09,024 INFO L168 Benchmark]: Toolchain (without parser) took 1468.59 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -726.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-11 19:41:09,026 INFO L168 Benchmark]: CDTParser took 0.19 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 19:41:09,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.60 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 19:41:09,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.50 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 19:41:09,029 INFO L168 Benchmark]: Boogie Preprocessor took 25.38 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 19:41:09,029 INFO L168 Benchmark]: RCFGBuilder took 473.30 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -767.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-09-11 19:41:09,031 INFO L168 Benchmark]: TraceAbstraction took 670.53 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 7.1 GB. [2018-09-11 19:41:09,039 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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. * CACSL2BoogieTranslator took 265.60 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 22.50 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 25.38 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 473.30 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -767.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 670.53 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 31.0 MB). Peak memory consumption was 31.0 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 i, n, a, b; [L12] i = 0 [L12] a = 0 [L12] b = 0 [L12] n = __VERIFIER_nondet_int() [L13] COND FALSE !(!(n >= 0 && n <= 1000000)) [L14] COND FALSE !(i < n) [L24] CALL __VERIFIER_assert(a + b == 3*n) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. UNKNOWN Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 12 SDslu, 19 SDs, 0 SdLazy, 12 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 0.6 AbsIntAvgWeakeningVarsNumRemoved, 2.8 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 4 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/bhmr2007_true-unreach-call_true-termination.c.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-11_19-41-09-058.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/bhmr2007_true-unreach-call_true-termination.c.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-11_19-41-09-058.csv Received shutdown request...