java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:51:59,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:51:59,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:51:59,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 20:51:59,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 20:51:59,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 20:51:59,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 20:51:59,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 20:51:59,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 20:51:59,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 20:51:59,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 20:51:59,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 20:51:59,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:51:59,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:51:59,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:51:59,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:51:59,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:51:59,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:51:59,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:51:59,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:51:59,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:51:59,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:51:59,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:51:59,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:51:59,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:51:59,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:51:59,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:51:59,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:51:59,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-03 20:51:59,896 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:51:59,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:51:59,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 20:51:59,897 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 20:51:59,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 20:51:59,898 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 20:51:59,898 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 20:51:59,898 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 20:51:59,898 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 20:51:59,898 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 20:51:59,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:51:59,899 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:51:59,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:51:59,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:51:59,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:51:59,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:51:59,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:51:59,901 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:51:59,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:51:59,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:51:59,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:51:59,902 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 20:51:59,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:51:59,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:51:59,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:51:59,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:51:59,903 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 20:51:59,903 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:51:59,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:51:59,903 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 20:51:59,930 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:51:59,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:51:59,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:51:59,949 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:51:59,950 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:51:59,950 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2019-09-03 20:52:00,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35aedc5b5/6fbe8dcd81c74c42a2050958a9674b2e/FLAGaefc7740c [2019-09-03 20:52:00,425 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:52:00,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2019-09-03 20:52:00,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35aedc5b5/6fbe8dcd81c74c42a2050958a9674b2e/FLAGaefc7740c [2019-09-03 20:52:00,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35aedc5b5/6fbe8dcd81c74c42a2050958a9674b2e [2019-09-03 20:52:00,844 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:52:00,845 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:52:00,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:52:00,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:52:00,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:52:00,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:52:00" (1/1) ... [2019-09-03 20:52:00,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60c13f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:00, skipping insertion in model container [2019-09-03 20:52:00,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:52:00" (1/1) ... [2019-09-03 20:52:00,862 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:52:00,880 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:52:01,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:52:01,032 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:52:01,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:52:01,069 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:52:01,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:01 WrapperNode [2019-09-03 20:52:01,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:52:01,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:52:01,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:52:01,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:52:01,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:01" (1/1) ... [2019-09-03 20:52:01,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:01" (1/1) ... [2019-09-03 20:52:01,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:01" (1/1) ... [2019-09-03 20:52:01,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:01" (1/1) ... [2019-09-03 20:52:01,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:01" (1/1) ... [2019-09-03 20:52:01,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:01" (1/1) ... [2019-09-03 20:52:01,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:01" (1/1) ... [2019-09-03 20:52:01,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:52:01,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:52:01,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:52:01,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:52:01,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:01" (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 [2019-09-03 20:52:01,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:52:01,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:52:01,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:52:01,255 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:52:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:52:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 20:52:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:52:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 20:52:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:52:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:52:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:52:01,532 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:52:01,532 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-03 20:52:01,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:52:01 BoogieIcfgContainer [2019-09-03 20:52:01,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:52:01,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:52:01,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:52:01,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:52:01,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:52:00" (1/3) ... [2019-09-03 20:52:01,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30240070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:52:01, skipping insertion in model container [2019-09-03 20:52:01,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:01" (2/3) ... [2019-09-03 20:52:01,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30240070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:52:01, skipping insertion in model container [2019-09-03 20:52:01,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:52:01" (3/3) ... [2019-09-03 20:52:01,546 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2019-09-03 20:52:01,553 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:52:01,560 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:52:01,575 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:52:01,599 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:52:01,599 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 20:52:01,600 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:52:01,600 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:52:01,600 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:52:01,600 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:52:01,600 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:52:01,600 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:52:01,615 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2019-09-03 20:52:01,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-03 20:52:01,625 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:52:01,627 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:52:01,629 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:52:01,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:52:01,633 INFO L82 PathProgramCache]: Analyzing trace with hash 2074932940, now seen corresponding path program 1 times [2019-09-03 20:52:01,636 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:52:01,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:52:01,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:52:01,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:52:01,673 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:52:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:52:01,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:52:01,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:52:01,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:52:01,729 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:52:01,736 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:52:01,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:52:01,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:52:01,749 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2019-09-03 20:52:01,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:52:01,767 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2019-09-03 20:52:01,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:52:01,768 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-09-03 20:52:01,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:52:01,778 INFO L225 Difference]: With dead ends: 47 [2019-09-03 20:52:01,778 INFO L226 Difference]: Without dead ends: 42 [2019-09-03 20:52:01,780 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:52:01,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-03 20:52:01,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-09-03 20:52:01,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-03 20:52:01,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2019-09-03 20:52:01,827 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 12 [2019-09-03 20:52:01,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:52:01,827 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2019-09-03 20:52:01,827 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:52:01,828 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2019-09-03 20:52:01,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-03 20:52:01,829 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:52:01,829 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:52:01,829 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:52:01,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:52:01,830 INFO L82 PathProgramCache]: Analyzing trace with hash -132543993, now seen corresponding path program 1 times [2019-09-03 20:52:01,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:52:01,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:52:01,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:52:01,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:52:01,832 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:52:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:52:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:52:01,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:52:01,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 20:52:01,964 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:52:01,966 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 20:52:01,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 20:52:01,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:52:01,967 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand 5 states. [2019-09-03 20:52:02,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:52:02,188 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2019-09-03 20:52:02,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-03 20:52:02,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-03 20:52:02,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:52:02,192 INFO L225 Difference]: With dead ends: 46 [2019-09-03 20:52:02,194 INFO L226 Difference]: Without dead ends: 46 [2019-09-03 20:52:02,195 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:52:02,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-03 20:52:02,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2019-09-03 20:52:02,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-09-03 20:52:02,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2019-09-03 20:52:02,214 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 13 [2019-09-03 20:52:02,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:52:02,214 INFO L475 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2019-09-03 20:52:02,214 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 20:52:02,215 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2019-09-03 20:52:02,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-03 20:52:02,217 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:52:02,217 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:52:02,218 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:52:02,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:52:02,218 INFO L82 PathProgramCache]: Analyzing trace with hash -811261734, now seen corresponding path program 1 times [2019-09-03 20:52:02,219 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:52:02,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:52:02,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:52:02,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:52:02,220 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:52:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:52:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:52:02,296 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:52:02,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 20:52:02,296 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:52:02,297 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 20:52:02,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 20:52:02,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:52:02,301 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand 5 states. [2019-09-03 20:52:02,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:52:02,378 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2019-09-03 20:52:02,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-03 20:52:02,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-09-03 20:52:02,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:52:02,380 INFO L225 Difference]: With dead ends: 50 [2019-09-03 20:52:02,381 INFO L226 Difference]: Without dead ends: 40 [2019-09-03 20:52:02,381 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:52:02,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-03 20:52:02,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-09-03 20:52:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-03 20:52:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-09-03 20:52:02,388 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 18 [2019-09-03 20:52:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:52:02,388 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-09-03 20:52:02,389 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 20:52:02,389 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2019-09-03 20:52:02,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-03 20:52:02,390 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:52:02,390 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:52:02,390 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:52:02,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:52:02,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1679618026, now seen corresponding path program 1 times [2019-09-03 20:52:02,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:52:02,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:52:02,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:52:02,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:52:02,392 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:52:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:52:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:52:02,458 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:52:02,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-03 20:52:02,458 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:52:02,458 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-03 20:52:02,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-03 20:52:02,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:52:02,460 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 6 states. [2019-09-03 20:52:02,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:52:02,565 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2019-09-03 20:52:02,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-03 20:52:02,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-09-03 20:52:02,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:52:02,567 INFO L225 Difference]: With dead ends: 53 [2019-09-03 20:52:02,569 INFO L226 Difference]: Without dead ends: 53 [2019-09-03 20:52:02,569 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-03 20:52:02,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-09-03 20:52:02,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2019-09-03 20:52:02,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-09-03 20:52:02,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2019-09-03 20:52:02,584 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 19 [2019-09-03 20:52:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:52:02,585 INFO L475 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2019-09-03 20:52:02,585 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-03 20:52:02,585 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2019-09-03 20:52:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-09-03 20:52:02,587 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:52:02,587 INFO L399 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:52:02,588 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:52:02,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:52:02,588 INFO L82 PathProgramCache]: Analyzing trace with hash 2122625936, now seen corresponding path program 1 times [2019-09-03 20:52:02,592 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:52:02,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:52:02,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:52:02,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:52:02,593 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:52:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:52:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-03 20:52:02,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 20:52:02,727 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-03 20:52:02,728 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 34 with the following transitions: [2019-09-03 20:52:02,730 INFO L207 CegarAbsIntRunner]: [0], [4], [7], [11], [20], [27], [32], [35], [96], [99], [101], [104], [106], [107], [108], [109], [115], [116], [117], [118] [2019-09-03 20:52:02,762 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-03 20:52:02,763 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-03 20:52:02,998 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-03 20:52:03,001 INFO L272 AbstractInterpreter]: Visited 20 different actions 133 times. Merged at 6 different actions 36 times. Widened at 1 different actions 2 times. Performed 184 root evaluator evaluations with a maximum evaluation depth of 5. Performed 184 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2019-09-03 20:52:03,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:52:03,006 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-03 20:52:03,006 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 20:52:03,007 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 20:52:03,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:52:03,024 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-03 20:52:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:52:03,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-03 20:52:03,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:52:03,191 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:52:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-03 20:52:03,236 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 20:52:03,278 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:52:03,307 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:52:03,308 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:52:03,350 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:52:03,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:52:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-03 20:52:03,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-03 20:52:03,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 17 [2019-09-03 20:52:03,380 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-03 20:52:03,380 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-03 20:52:03,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-03 20:52:03,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2019-09-03 20:52:03,381 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 14 states. [2019-09-03 20:52:03,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:52:03,607 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2019-09-03 20:52:03,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-03 20:52:03,611 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2019-09-03 20:52:03,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:52:03,611 INFO L225 Difference]: With dead ends: 49 [2019-09-03 20:52:03,611 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 20:52:03,612 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2019-09-03 20:52:03,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 20:52:03,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 20:52:03,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 20:52:03,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 20:52:03,613 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2019-09-03 20:52:03,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:52:03,614 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 20:52:03,614 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-03 20:52:03,614 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 20:52:03,614 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 20:52:03,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:52:03 BoogieIcfgContainer [2019-09-03 20:52:03,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:52:03,629 INFO L168 Benchmark]: Toolchain (without parser) took 2780.71 ms. Allocated memory was 135.8 MB in the beginning and 223.3 MB in the end (delta: 87.6 MB). Free memory was 87.1 MB in the beginning and 113.8 MB in the end (delta: -26.7 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. [2019-09-03 20:52:03,632 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 135.8 MB. Free memory was 105.7 MB in the beginning and 105.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:52:03,633 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.15 ms. Allocated memory is still 135.8 MB. Free memory was 86.9 MB in the beginning and 77.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-09-03 20:52:03,635 INFO L168 Benchmark]: Boogie Preprocessor took 136.23 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 77.1 MB in the beginning and 177.2 MB in the end (delta: -100.1 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2019-09-03 20:52:03,636 INFO L168 Benchmark]: RCFGBuilder took 328.08 ms. Allocated memory is still 199.8 MB. Free memory was 177.2 MB in the beginning and 161.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-03 20:52:03,637 INFO L168 Benchmark]: TraceAbstraction took 2088.09 ms. Allocated memory was 199.8 MB in the beginning and 223.3 MB in the end (delta: 23.6 MB). Free memory was 161.2 MB in the beginning and 113.8 MB in the end (delta: 47.4 MB). Peak memory consumption was 70.9 MB. Max. memory is 7.1 GB. [2019-09-03 20:52:03,646 INFO L335 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 135.8 MB. Free memory was 105.7 MB in the beginning and 105.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 224.15 ms. Allocated memory is still 135.8 MB. Free memory was 86.9 MB in the beginning and 77.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.23 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 77.1 MB in the beginning and 177.2 MB in the end (delta: -100.1 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 328.08 ms. Allocated memory is still 199.8 MB. Free memory was 177.2 MB in the beginning and 161.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2088.09 ms. Allocated memory was 199.8 MB in the beginning and 223.3 MB in the end (delta: 23.6 MB). Free memory was 161.2 MB in the beginning and 113.8 MB in the end (delta: 47.4 MB). Peak memory consumption was 70.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 47 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 245 SDtfs, 85 SDslu, 517 SDs, 0 SdLazy, 266 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 11020 SizeOfPredicates, 4 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 46/73 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...