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/array-examples/standard_maxInArray_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:30:05,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:30:05,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:30:05,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:30:05,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:30:05,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:30:05,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:30:05,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:30:05,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:30:05,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:30:05,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:30:05,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:30:05,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:30:05,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:30:05,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:30:05,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:30:05,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:30:05,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:30:05,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:30:05,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:30:05,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:30:05,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:30:05,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:30:05,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:30:05,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:30:05,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:30:05,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:30:05,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:30:05,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:30:05,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:30:05,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:30:05,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:30:05,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:30:05,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:30:05,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:30:05,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:30:05,086 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 [2019-10-02 16:30:05,105 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:30:05,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:30:05,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:30:05,107 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:30:05,108 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:30:05,109 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:30:05,109 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:30:05,109 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:30:05,109 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:30:05,109 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:30:05,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:30:05,111 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:30:05,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:30:05,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:30:05,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:30:05,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:30:05,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:30:05,113 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:30:05,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:30:05,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:30:05,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:30:05,113 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:30:05,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:30:05,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:05,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:30:05,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:30:05,114 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:30:05,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:30:05,115 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:30:05,115 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:30:05,159 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:30:05,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:30:05,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:30:05,177 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:30:05,178 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:30:05,178 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i [2019-10-02 16:30:05,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/002eab594/fb43a4ed3e3e49cdb3c10c01ec915203/FLAG683620647 [2019-10-02 16:30:05,676 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:30:05,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i [2019-10-02 16:30:05,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/002eab594/fb43a4ed3e3e49cdb3c10c01ec915203/FLAG683620647 [2019-10-02 16:30:06,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/002eab594/fb43a4ed3e3e49cdb3c10c01ec915203 [2019-10-02 16:30:06,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:30:06,071 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:30:06,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:06,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:30:06,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:30:06,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:06" (1/1) ... [2019-10-02 16:30:06,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5407edcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:06, skipping insertion in model container [2019-10-02 16:30:06,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:06" (1/1) ... [2019-10-02 16:30:06,088 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:30:06,105 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:06,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:06,323 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:06,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:06,372 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:06,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:06 WrapperNode [2019-10-02 16:30:06,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:06,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:06,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:06,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:06,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:06" (1/1) ... [2019-10-02 16:30:06,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:06" (1/1) ... [2019-10-02 16:30:06,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:06" (1/1) ... [2019-10-02 16:30:06,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:06" (1/1) ... [2019-10-02 16:30:06,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:06" (1/1) ... [2019-10-02 16:30:06,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:06" (1/1) ... [2019-10-02 16:30:06,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:06" (1/1) ... [2019-10-02 16:30:06,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:06,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:06,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:06,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:06,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:06" (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 [2019-10-02 16:30:06,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:06,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:06,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:30:06,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:06,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:06,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:30:06,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:30:06,558 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:06,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:30:06,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:30:06,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:30:06,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:30:06,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:06,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:06,826 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:06,827 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-02 16:30:06,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:06 BoogieIcfgContainer [2019-10-02 16:30:06,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:06,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:06,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:06,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:06,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:06" (1/3) ... [2019-10-02 16:30:06,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee650ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:06, skipping insertion in model container [2019-10-02 16:30:06,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:06" (2/3) ... [2019-10-02 16:30:06,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee650ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:06, skipping insertion in model container [2019-10-02 16:30:06,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:06" (3/3) ... [2019-10-02 16:30:06,848 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_maxInArray_ground.i [2019-10-02 16:30:06,860 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:06,885 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:06,910 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:06,937 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:06,938 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:06,938 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:06,938 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:06,938 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:06,938 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:06,939 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:06,939 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:06,954 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-10-02 16:30:06,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-02 16:30:06,962 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:06,963 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:06,965 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:06,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:06,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1241254978, now seen corresponding path program 1 times [2019-10-02 16:30:06,973 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:07,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:07,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:07,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:07,022 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:07,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:07,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:30:07,101 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:07,105 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:07,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:07,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:07,119 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-10-02 16:30:07,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:07,136 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-10-02 16:30:07,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:07,137 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-10-02 16:30:07,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:07,147 INFO L225 Difference]: With dead ends: 28 [2019-10-02 16:30:07,147 INFO L226 Difference]: Without dead ends: 23 [2019-10-02 16:30:07,149 INFO L640 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 [2019-10-02 16:30:07,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-02 16:30:07,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-02 16:30:07,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-02 16:30:07,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-10-02 16:30:07,185 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2019-10-02 16:30:07,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:07,186 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-10-02 16:30:07,186 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:07,187 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-10-02 16:30:07,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-02 16:30:07,187 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:07,188 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:07,188 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:07,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:07,189 INFO L82 PathProgramCache]: Analyzing trace with hash -159068691, now seen corresponding path program 1 times [2019-10-02 16:30:07,189 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:07,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:07,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:07,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:07,191 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:07,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:07,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:07,248 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:07,250 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:07,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:07,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:07,251 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 3 states. [2019-10-02 16:30:07,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:07,266 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-10-02 16:30:07,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:07,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-02 16:30:07,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:07,268 INFO L225 Difference]: With dead ends: 25 [2019-10-02 16:30:07,268 INFO L226 Difference]: Without dead ends: 25 [2019-10-02 16:30:07,269 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:07,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-02 16:30:07,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-10-02 16:30:07,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-02 16:30:07,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-10-02 16:30:07,275 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2019-10-02 16:30:07,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:07,276 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-10-02 16:30:07,276 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:07,276 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-10-02 16:30:07,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-02 16:30:07,277 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:07,277 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:07,277 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:07,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:07,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1675123339, now seen corresponding path program 1 times [2019-10-02 16:30:07,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:07,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:07,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:07,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:07,284 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:30:07,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:07,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:07,381 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:07,381 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:07,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:07,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:07,382 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 3 states. [2019-10-02 16:30:07,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:07,427 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-10-02 16:30:07,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:07,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-02 16:30:07,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:07,430 INFO L225 Difference]: With dead ends: 27 [2019-10-02 16:30:07,430 INFO L226 Difference]: Without dead ends: 27 [2019-10-02 16:30:07,432 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:07,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-02 16:30:07,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-10-02 16:30:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-02 16:30:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-10-02 16:30:07,442 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2019-10-02 16:30:07,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:07,442 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-10-02 16:30:07,443 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:07,443 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-10-02 16:30:07,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-02 16:30:07,444 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:07,444 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:07,445 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:07,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:07,446 INFO L82 PathProgramCache]: Analyzing trace with hash 99818017, now seen corresponding path program 1 times [2019-10-02 16:30:07,446 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:07,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:07,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:07,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:07,452 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:30:07,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:30:07,531 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:30:07,532 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2019-10-02 16:30:07,534 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [26], [28], [33], [35], [39], [47], [57], [60], [62], [68], [69], [70], [72] [2019-10-02 16:30:07,570 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:30:07,570 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:30:07,633 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:30:07,635 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 22 variables. [2019-10-02 16:30:07,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:07,638 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:30:07,676 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:30:07,676 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:30:07,679 INFO L420 sIntCurrentIteration]: We unified 19 AI predicates to 19 [2019-10-02 16:30:07,679 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:30:07,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:30:07,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-02 16:30:07,680 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:07,681 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:07,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:07,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:07,682 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 2 states. [2019-10-02 16:30:07,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:07,683 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:30:07,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:07,683 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-10-02 16:30:07,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:07,684 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:30:07,684 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:30:07,684 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:07,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:30:07,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:30:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:30:07,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:30:07,686 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-10-02 16:30:07,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:07,686 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:30:07,686 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:07,686 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:30:07,687 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:30:07,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:07 BoogieIcfgContainer [2019-10-02 16:30:07,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:30:07,695 INFO L168 Benchmark]: Toolchain (without parser) took 1622.96 ms. Allocated memory was 133.2 MB in the beginning and 199.2 MB in the end (delta: 66.1 MB). Free memory was 89.4 MB in the beginning and 115.1 MB in the end (delta: -25.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:07,696 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 133.2 MB. Free memory was 107.3 MB in the beginning and 107.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:30:07,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.72 ms. Allocated memory is still 133.2 MB. Free memory was 89.1 MB in the beginning and 79.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:07,698 INFO L168 Benchmark]: Boogie Preprocessor took 124.01 ms. Allocated memory was 133.2 MB in the beginning and 199.2 MB in the end (delta: 66.1 MB). Free memory was 79.2 MB in the beginning and 175.2 MB in the end (delta: -96.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:07,699 INFO L168 Benchmark]: RCFGBuilder took 331.02 ms. Allocated memory is still 199.2 MB. Free memory was 175.2 MB in the beginning and 160.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:07,700 INFO L168 Benchmark]: TraceAbstraction took 852.76 ms. Allocated memory is still 199.2 MB. Free memory was 159.9 MB in the beginning and 115.1 MB in the end (delta: 44.8 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:07,703 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 133.2 MB. Free memory was 107.3 MB in the beginning and 107.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 301.72 ms. Allocated memory is still 133.2 MB. Free memory was 89.1 MB in the beginning and 79.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.01 ms. Allocated memory was 133.2 MB in the beginning and 199.2 MB in the end (delta: 66.1 MB). Free memory was 79.2 MB in the beginning and 175.2 MB in the end (delta: -96.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 331.02 ms. Allocated memory is still 199.2 MB. Free memory was 175.2 MB in the beginning and 160.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 852.76 ms. Allocated memory is still 199.2 MB. Free memory was 159.9 MB in the beginning and 115.1 MB in the end (delta: 44.8 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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, 28 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 83 SDtfs, 4 SDslu, 43 SDs, 0 SdLazy, 12 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9473684210526315 AbsIntWeakeningRatio, 0.6842105263157895 AbsIntAvgWeakeningVarsNumRemoved, 0.3157894736842105 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 1183 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...