java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/nested_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 19:41:41,102 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 19:41:41,105 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 19:41:41,120 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 19:41:41,120 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 19:41:41,121 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 19:41:41,125 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 19:41:41,129 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 19:41:41,131 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 19:41:41,132 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 19:41:41,133 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 19:41:41,134 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 19:41:41,135 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 19:41:41,137 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 19:41:41,138 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 19:41:41,138 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 19:41:41,139 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 19:41:41,141 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 19:41:41,143 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 19:41:41,145 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 19:41:41,146 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 19:41:41,147 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 19:41:41,150 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 19:41:41,150 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 19:41:41,150 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 19:41:41,151 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 19:41:41,152 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 19:41:41,153 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 19:41:41,154 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 19:41:41,155 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 19:41:41,155 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 19:41:41,156 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 19:41:41,156 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 19:41:41,157 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 19:41:41,158 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 19:41:41,159 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 19:41:41,159 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 19:41:41,174 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 19:41:41,175 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 19:41:41,176 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 19:41:41,176 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 19:41:41,176 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 19:41:41,176 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 19:41:41,177 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 19:41:41,177 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 19:41:41,177 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-11 19:41:41,177 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 19:41:41,177 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 19:41:41,178 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 19:41:41,178 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 19:41:41,179 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 19:41:41,179 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 19:41:41,179 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 19:41:41,179 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 19:41:41,179 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 19:41:41,180 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 19:41:41,180 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 19:41:41,180 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 19:41:41,180 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 19:41:41,180 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 19:41:41,181 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 19:41:41,181 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 19:41:41,181 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 19:41:41,181 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 19:41:41,181 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 19:41:41,182 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 19:41:41,182 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 19:41:41,182 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 19:41:41,182 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 19:41:41,182 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 19:41:41,183 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 19:41:41,241 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 19:41:41,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 19:41:41,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 19:41:41,269 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 19:41:41,269 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 19:41:41,270 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/nested_true-unreach-call.c [2018-09-11 19:41:41,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fdc49054/862622d3f887475fbdea02fbfbd87f72/FLAG0e711510e [2018-09-11 19:41:41,807 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 19:41:41,808 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/nested_true-unreach-call.c [2018-09-11 19:41:41,819 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fdc49054/862622d3f887475fbdea02fbfbd87f72/FLAG0e711510e [2018-09-11 19:41:41,839 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fdc49054/862622d3f887475fbdea02fbfbd87f72 [2018-09-11 19:41:41,852 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 19:41:41,855 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 19:41:41,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 19:41:41,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 19:41:41,865 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 19:41:41,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:41:41" (1/1) ... [2018-09-11 19:41:41,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c29082f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:41, skipping insertion in model container [2018-09-11 19:41:41,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:41:41" (1/1) ... [2018-09-11 19:41:42,081 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 19:41:42,133 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:41:42,151 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 19:41:42,158 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:41:42,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:42 WrapperNode [2018-09-11 19:41:42,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 19:41:42,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 19:41:42,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 19:41:42,174 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 19:41:42,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:42" (1/1) ... [2018-09-11 19:41:42,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:42" (1/1) ... [2018-09-11 19:41:42,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 19:41:42,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 19:41:42,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 19:41:42,199 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 19:41:42,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:42" (1/1) ... [2018-09-11 19:41:42,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:42" (1/1) ... [2018-09-11 19:41:42,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:42" (1/1) ... [2018-09-11 19:41:42,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:42" (1/1) ... [2018-09-11 19:41:42,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:42" (1/1) ... [2018-09-11 19:41:42,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:42" (1/1) ... [2018-09-11 19:41:42,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:42" (1/1) ... [2018-09-11 19:41:42,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 19:41:42,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 19:41:42,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 19:41:42,223 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 19:41:42,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:42" (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 19:41:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 19:41:42,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 19:41:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__nondet [2018-09-11 19:41:42,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c__nondet [2018-09-11 19:41:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 19:41:42,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 19:41:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 19:41:42,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 19:41:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assert [2018-09-11 19:41:42,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assert [2018-09-11 19:41:42,727 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 19:41:42,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:41:42 BoogieIcfgContainer [2018-09-11 19:41:42,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 19:41:42,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 19:41:42,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 19:41:42,743 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 19:41:42,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:41:41" (1/3) ... [2018-09-11 19:41:42,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c173e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:41:42, skipping insertion in model container [2018-09-11 19:41:42,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:41:42" (2/3) ... [2018-09-11 19:41:42,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c173e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:41:42, skipping insertion in model container [2018-09-11 19:41:42,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:41:42" (3/3) ... [2018-09-11 19:41:42,751 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_true-unreach-call.c [2018-09-11 19:41:42,764 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 19:41:42,774 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 19:41:42,825 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 19:41:42,826 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 19:41:42,826 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 19:41:42,826 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 19:41:42,827 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 19:41:42,827 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 19:41:42,827 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 19:41:42,827 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 19:41:42,827 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 19:41:42,846 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-09-11 19:41:42,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-11 19:41:42,853 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:41:42,855 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 19:41:42,857 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:41:42,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1030098894, now seen corresponding path program 1 times [2018-09-11 19:41:42,864 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:41:42,865 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-11 19:41:42,867 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [36], [40], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-11 19:41:42,919 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:41:42,920 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:41:42,972 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:41:42,974 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-09-11 19:41:43,003 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:41:43,105 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 84.72% of their original sizes. [2018-09-11 19:41:43,105 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:41:43,205 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:41:43,207 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:41:43,207 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-11 19:41:43,207 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:41:43,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-11 19:41:43,221 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-11 19:41:43,222 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-11 19:41:43,225 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 4 states. [2018-09-11 19:41:43,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:41:43,540 INFO L93 Difference]: Finished difference Result 55 states and 80 transitions. [2018-09-11 19:41:43,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-11 19:41:43,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-09-11 19:41:43,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:41:43,553 INFO L225 Difference]: With dead ends: 55 [2018-09-11 19:41:43,554 INFO L226 Difference]: Without dead ends: 36 [2018-09-11 19:41:43,558 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-11 19:41:43,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-09-11 19:41:43,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2018-09-11 19:41:43,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-11 19:41:43,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2018-09-11 19:41:43,608 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 19 [2018-09-11 19:41:43,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:41:43,609 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2018-09-11 19:41:43,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-11 19:41:43,609 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2018-09-11 19:41:43,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-11 19:41:43,610 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:41:43,610 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:41:43,611 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:41:43,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1045124110, now seen corresponding path program 1 times [2018-09-11 19:41:43,612 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:41:43,612 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-11 19:41:43,612 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [32], [34], [40], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-11 19:41:43,615 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:41:43,615 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:41:43,710 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:41:43,710 INFO L272 AbstractInterpreter]: Visited 18 different actions 66 times. Merged at 4 different actions 38 times. Widened at 1 different actions 6 times. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-09-11 19:41:43,749 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:41:43,818 INFO L232 lantSequenceWeakener]: Weakened 18 states. On average, predicates are now at 62.04% of their original sizes. [2018-09-11 19:41:43,818 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:41:44,215 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:41:44,216 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:41:44,216 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 19:41:44,216 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:41:44,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 19:41:44,220 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 19:41:44,221 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-11 19:41:44,221 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2018-09-11 19:41:44,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:41:44,517 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2018-09-11 19:41:44,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 19:41:44,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-09-11 19:41:44,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:41:44,522 INFO L225 Difference]: With dead ends: 54 [2018-09-11 19:41:44,522 INFO L226 Difference]: Without dead ends: 39 [2018-09-11 19:41:44,524 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-11 19:41:44,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-11 19:41:44,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-09-11 19:41:44,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-11 19:41:44,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-09-11 19:41:44,535 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 24 [2018-09-11 19:41:44,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:41:44,535 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-09-11 19:41:44,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 19:41:44,535 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-09-11 19:41:44,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-11 19:41:44,536 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:41:44,537 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:41:44,537 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:41:44,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1102382412, now seen corresponding path program 1 times [2018-09-11 19:41:44,538 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:41:44,538 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-11 19:41:44,538 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [32], [34], [42], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-11 19:41:44,540 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:41:44,541 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:41:44,580 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:41:44,580 INFO L272 AbstractInterpreter]: Visited 22 different actions 60 times. Merged at 4 different actions 30 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-09-11 19:41:44,609 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:41:44,664 INFO L232 lantSequenceWeakener]: Weakened 22 states. On average, predicates are now at 60.23% of their original sizes. [2018-09-11 19:41:44,665 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:41:45,363 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:41:45,364 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:41:45,364 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-11 19:41:45,364 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:41:45,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-11 19:41:45,367 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-11 19:41:45,367 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-11 19:41:45,370 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 10 states. [2018-09-11 19:41:45,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:41:45,976 INFO L93 Difference]: Finished difference Result 62 states and 77 transitions. [2018-09-11 19:41:45,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-11 19:41:45,979 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-09-11 19:41:45,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:41:45,980 INFO L225 Difference]: With dead ends: 62 [2018-09-11 19:41:45,980 INFO L226 Difference]: Without dead ends: 47 [2018-09-11 19:41:45,981 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-11 19:41:45,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-11 19:41:46,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2018-09-11 19:41:46,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-09-11 19:41:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-09-11 19:41:46,002 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 24 [2018-09-11 19:41:46,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:41:46,005 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-09-11 19:41:46,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-11 19:41:46,005 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-09-11 19:41:46,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-11 19:41:46,006 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:41:46,006 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:41:46,007 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:41:46,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1438151120, now seen corresponding path program 1 times [2018-09-11 19:41:46,007 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:41:46,007 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-11 19:41:46,008 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [30], [34], [40], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-11 19:41:46,013 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:41:46,014 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:41:46,025 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:41:46,025 INFO L272 AbstractInterpreter]: Visited 17 different actions 21 times. Merged at 3 different actions 3 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-09-11 19:41:46,063 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:41:46,103 INFO L232 lantSequenceWeakener]: Weakened 17 states. On average, predicates are now at 67.65% of their original sizes. [2018-09-11 19:41:46,103 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:41:46,302 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:41:46,302 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:41:46,302 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 19:41:46,303 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:41:46,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 19:41:46,304 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 19:41:46,304 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-11 19:41:46,304 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 6 states. [2018-09-11 19:41:46,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:41:46,569 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2018-09-11 19:41:46,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 19:41:46,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-09-11 19:41:46,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:41:46,573 INFO L225 Difference]: With dead ends: 67 [2018-09-11 19:41:46,574 INFO L226 Difference]: Without dead ends: 52 [2018-09-11 19:41:46,575 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-11 19:41:46,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-11 19:41:46,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2018-09-11 19:41:46,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-11 19:41:46,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2018-09-11 19:41:46,588 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 24 [2018-09-11 19:41:46,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:41:46,589 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2018-09-11 19:41:46,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 19:41:46,589 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2018-09-11 19:41:46,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-11 19:41:46,590 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:41:46,590 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:41:46,591 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:41:46,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1472263337, now seen corresponding path program 1 times [2018-09-11 19:41:46,591 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:41:46,592 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-09-11 19:41:46,592 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [30], [32], [34], [40], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-11 19:41:46,594 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:41:46,594 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:41:46,644 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:41:46,644 INFO L272 AbstractInterpreter]: Visited 23 different actions 103 times. Merged at 6 different actions 55 times. Widened at 1 different actions 8 times. Found 15 fixpoints after 5 different actions. Largest state had 8 variables. [2018-09-11 19:41:46,682 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:41:46,737 INFO L232 lantSequenceWeakener]: Weakened 26 states. On average, predicates are now at 58.01% of their original sizes. [2018-09-11 19:41:46,737 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:41:47,383 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:41:47,383 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:41:47,384 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-11 19:41:47,384 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:41:47,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-11 19:41:47,384 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-11 19:41:47,385 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-11 19:41:47,385 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 12 states. [2018-09-11 19:41:47,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:41:47,931 INFO L93 Difference]: Finished difference Result 74 states and 91 transitions. [2018-09-11 19:41:47,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-11 19:41:47,932 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2018-09-11 19:41:47,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:41:47,934 INFO L225 Difference]: With dead ends: 74 [2018-09-11 19:41:47,934 INFO L226 Difference]: Without dead ends: 59 [2018-09-11 19:41:47,935 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-09-11 19:41:47,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-11 19:41:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2018-09-11 19:41:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-09-11 19:41:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2018-09-11 19:41:47,950 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 28 [2018-09-11 19:41:47,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:41:47,950 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2018-09-11 19:41:47,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-11 19:41:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2018-09-11 19:41:47,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-11 19:41:47,952 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:41:47,952 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:41:47,952 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:41:47,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1415005035, now seen corresponding path program 1 times [2018-09-11 19:41:47,953 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:41:47,953 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-09-11 19:41:47,953 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [30], [32], [34], [42], [48], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-11 19:41:47,956 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:41:47,956 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:41:48,005 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:41:48,006 INFO L272 AbstractInterpreter]: Visited 23 different actions 100 times. Merged at 8 different actions 52 times. Widened at 1 different actions 7 times. Found 13 fixpoints after 4 different actions. Largest state had 8 variables. [2018-09-11 19:41:48,045 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:41:48,099 INFO L232 lantSequenceWeakener]: Weakened 26 states. On average, predicates are now at 58.01% of their original sizes. [2018-09-11 19:41:48,099 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:41:48,596 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:41:48,597 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:41:48,597 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-11 19:41:48,597 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:41:48,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-11 19:41:48,598 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-11 19:41:48,599 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-11 19:41:48,599 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand 12 states. [2018-09-11 19:41:48,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:41:48,959 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2018-09-11 19:41:48,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-11 19:41:48,960 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2018-09-11 19:41:48,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:41:48,962 INFO L225 Difference]: With dead ends: 67 [2018-09-11 19:41:48,962 INFO L226 Difference]: Without dead ends: 65 [2018-09-11 19:41:48,963 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-09-11 19:41:48,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-11 19:41:48,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2018-09-11 19:41:48,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-11 19:41:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2018-09-11 19:41:48,976 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 28 [2018-09-11 19:41:48,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:41:48,976 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2018-09-11 19:41:48,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-11 19:41:48,977 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2018-09-11 19:41:48,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-11 19:41:48,978 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:41:48,978 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:41:48,978 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_industry_pattern_nested_true_unreach_call_c____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:41:48,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1416852077, now seen corresponding path program 1 times [2018-09-11 19:41:48,979 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:41:48,979 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-09-11 19:41:48,979 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [8], [12], [18], [22], [25], [27], [30], [32], [34], [42], [46], [55], [58], [60], [66], [67], [68], [70], [71], [72] [2018-09-11 19:41:48,981 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:41:48,981 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:41:49,018 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-11 19:41:49,018 INFO L272 AbstractInterpreter]: Visited 24 different actions 98 times. Merged at 7 different actions 51 times. Widened at 1 different actions 7 times. Found 14 fixpoints after 5 different actions. Largest state had 8 variables. [2018-09-11 19:41:49,041 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-11 19:41:49,060 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-11 19:41:49,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 07:41:49 BoogieIcfgContainer [2018-09-11 19:41:49,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-11 19:41:49,062 INFO L168 Benchmark]: Toolchain (without parser) took 7209.62 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -312.8 MB). Peak memory consumption was 402.8 MB. Max. memory is 7.1 GB. [2018-09-11 19:41:49,064 INFO L168 Benchmark]: CDTParser took 0.15 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 19:41:49,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.10 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 19:41:49,066 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.72 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 19:41:49,066 INFO L168 Benchmark]: Boogie Preprocessor took 23.51 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 19:41:49,067 INFO L168 Benchmark]: RCFGBuilder took 505.40 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -770.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-09-11 19:41:49,068 INFO L168 Benchmark]: TraceAbstraction took 6328.36 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 447.2 MB). Peak memory consumption was 447.2 MB. Max. memory is 7.1 GB. [2018-09-11 19:41:49,072 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 316.10 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 24.72 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 23.51 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 505.40 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -770.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6328.36 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 447.2 MB). Peak memory consumption was 447.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L7] int last ; [L22] CALL, EXPR nondet() [L17] int x; [L18] RET return x; [L22] EXPR nondet() [L22] last = nondet() [L23] int a=0,b=0,c=0,st=0; [L23] int a=0,b=0,c=0,st=0; [L23] int a=0,b=0,c=0,st=0; [L23] int a=0,b=0,c=0,st=0; [L24] COND TRUE 1 [L25] st=1 [L26] c=0 [L26] COND TRUE c<200000 [L27] COND FALSE !(c==last) [L26] c++ [L26] c++ [L26] COND TRUE c<200000 [L27] COND TRUE c==last [L27] st = 0 [L26] c++ [L26] c++ [L26] COND FALSE !(c<200000) [L28] COND FALSE !(st==0 && c==last+1) [L30] a+=2 [L30] b+=2 [L31] COND TRUE c==last && st==0 [L32] a = a+1 [L33] CALL __VERIFIER_assert(a==b && c==200000) [L9] COND TRUE !(cond) [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. UNKNOWN Result, 6.2s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 2.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 135 SDtfs, 107 SDslu, 479 SDs, 0 SdLazy, 414 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 146 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 7 AbstIntIterations, 6 AbstIntStrong, 0.8918439716312057 AbsIntWeakeningRatio, 0.624113475177305 AbsIntAvgWeakeningVarsNumRemoved, 15.546099290780141 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 49 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-11_19-41-49-085.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-11_19-41-49-085.csv Received shutdown request...