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/sanfoundry_24-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:04:10,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:04:10,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:04:10,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:04:10,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:04:10,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:04:10,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:04:10,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:04:10,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:04:10,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:04:10,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:04:10,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:04:10,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:04:10,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:04:10,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:04:10,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:04:10,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:04:10,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:04:10,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:04:10,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:04:10,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:04:10,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:04:10,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:04:10,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:04:11,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 17:04:11,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:04:11,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:04:11,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:04:11,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:04:11,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:04:11,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:04:11,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:04:11,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:04:11,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:04:11,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:04:11,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:04:11,019 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 [2019-09-16 17:04:11,045 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:04:11,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:04:11,045 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:04:11,046 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:04:11,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:04:11,047 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:04:11,047 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:04:11,048 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:04:11,048 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:04:11,048 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:04:11,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:04:11,050 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:04:11,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:04:11,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:04:11,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:04:11,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:04:11,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:04:11,052 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:04:11,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:04:11,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:04:11,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:04:11,053 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:04:11,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:04:11,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:04:11,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:04:11,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:04:11,055 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:04:11,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:04:11,055 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:04:11,055 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:04:11,118 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:04:11,138 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:04:11,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:04:11,145 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:04:11,145 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:04:11,146 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2019-09-16 17:04:11,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd7268286/0dcb9846727e43ea8ea4cf5a0343e602/FLAG1458fbe13 [2019-09-16 17:04:11,658 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:04:11,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2019-09-16 17:04:11,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd7268286/0dcb9846727e43ea8ea4cf5a0343e602/FLAG1458fbe13 [2019-09-16 17:04:12,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd7268286/0dcb9846727e43ea8ea4cf5a0343e602 [2019-09-16 17:04:12,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:04:12,020 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:04:12,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:04:12,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:04:12,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:04:12,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:04:12" (1/1) ... [2019-09-16 17:04:12,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eb936b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:12, skipping insertion in model container [2019-09-16 17:04:12,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:04:12" (1/1) ... [2019-09-16 17:04:12,034 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:04:12,051 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:04:12,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:04:12,242 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:04:12,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:04:12,367 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:04:12,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:12 WrapperNode [2019-09-16 17:04:12,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:04:12,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:04:12,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:04:12,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:04:12,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:12" (1/1) ... [2019-09-16 17:04:12,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:12" (1/1) ... [2019-09-16 17:04:12,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:12" (1/1) ... [2019-09-16 17:04:12,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:12" (1/1) ... [2019-09-16 17:04:12,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:12" (1/1) ... [2019-09-16 17:04:12,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:12" (1/1) ... [2019-09-16 17:04:12,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:12" (1/1) ... [2019-09-16 17:04:12,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:04:12,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:04:12,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:04:12,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:04:12,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:12" (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 [2019-09-16 17:04:12,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:04:12,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:04:12,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 17:04:12,485 INFO L138 BoogieDeclarations]: Found implementation of procedure printEven [2019-09-16 17:04:12,485 INFO L138 BoogieDeclarations]: Found implementation of procedure printOdd [2019-09-16 17:04:12,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:04:12,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:04:12,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:04:12,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 17:04:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure printEven [2019-09-16 17:04:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure printOdd [2019-09-16 17:04:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:04:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:04:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:04:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:04:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:04:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:04:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:04:12,805 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:04:12,805 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-16 17:04:12,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:04:12 BoogieIcfgContainer [2019-09-16 17:04:12,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:04:12,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:04:12,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:04:12,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:04:12,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:04:12" (1/3) ... [2019-09-16 17:04:12,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193574b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:04:12, skipping insertion in model container [2019-09-16 17:04:12,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:12" (2/3) ... [2019-09-16 17:04:12,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193574b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:04:12, skipping insertion in model container [2019-09-16 17:04:12,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:04:12" (3/3) ... [2019-09-16 17:04:12,815 INFO L109 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-1.i [2019-09-16 17:04:12,823 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:04:12,830 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:04:12,848 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:04:12,876 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:04:12,876 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:04:12,876 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:04:12,876 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:04:12,876 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:04:12,877 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:04:12,877 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:04:12,877 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:04:12,895 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-09-16 17:04:12,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-16 17:04:12,906 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:12,907 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:12,909 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:12,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:12,914 INFO L82 PathProgramCache]: Analyzing trace with hash -762079996, now seen corresponding path program 1 times [2019-09-16 17:04:12,916 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:12,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:12,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:12,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:12,968 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:04:13,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:04:13,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:04:13,148 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:13,152 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:04:13,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:04:13,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:04:13,168 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 5 states. [2019-09-16 17:04:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:13,287 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2019-09-16 17:04:13,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:04:13,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-16 17:04:13,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:13,300 INFO L225 Difference]: With dead ends: 58 [2019-09-16 17:04:13,301 INFO L226 Difference]: Without dead ends: 46 [2019-09-16 17:04:13,303 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:04:13,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-16 17:04:13,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2019-09-16 17:04:13,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-16 17:04:13,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-09-16 17:04:13,348 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2019-09-16 17:04:13,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:13,349 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-09-16 17:04:13,349 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:04:13,349 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-09-16 17:04:13,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-16 17:04:13,350 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:13,351 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:13,351 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:13,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:13,352 INFO L82 PathProgramCache]: Analyzing trace with hash 204295910, now seen corresponding path program 1 times [2019-09-16 17:04:13,352 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:13,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:13,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:13,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:13,355 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 17:04:13,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:04:13,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:04:13,628 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:13,630 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:04:13,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:04:13,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:04:13,631 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 8 states. [2019-09-16 17:04:13,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:13,768 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-09-16 17:04:13,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-16 17:04:13,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-09-16 17:04:13,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:13,770 INFO L225 Difference]: With dead ends: 40 [2019-09-16 17:04:13,771 INFO L226 Difference]: Without dead ends: 40 [2019-09-16 17:04:13,772 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-09-16 17:04:13,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-16 17:04:13,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-09-16 17:04:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-16 17:04:13,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2019-09-16 17:04:13,779 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 18 [2019-09-16 17:04:13,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:13,779 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-09-16 17:04:13,779 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:04:13,780 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2019-09-16 17:04:13,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-16 17:04:13,781 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:13,781 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:13,781 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:13,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:13,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1004823058, now seen corresponding path program 1 times [2019-09-16 17:04:13,782 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:13,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:13,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:13,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:13,785 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-16 17:04:14,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:04:14,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:04:14,070 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:14,071 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:04:14,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:04:14,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:04:14,072 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 8 states. [2019-09-16 17:04:14,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:14,204 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2019-09-16 17:04:14,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-16 17:04:14,204 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2019-09-16 17:04:14,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:14,205 INFO L225 Difference]: With dead ends: 38 [2019-09-16 17:04:14,205 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:04:14,206 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-09-16 17:04:14,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:04:14,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:04:14,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:04:14,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:04:14,207 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-09-16 17:04:14,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:14,207 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:04:14,207 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:04:14,208 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:04:14,208 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:04:14,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:04:14 BoogieIcfgContainer [2019-09-16 17:04:14,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:04:14,216 INFO L168 Benchmark]: Toolchain (without parser) took 2195.36 ms. Allocated memory was 140.5 MB in the beginning and 226.5 MB in the end (delta: 86.0 MB). Free memory was 87.9 MB in the beginning and 191.6 MB in the end (delta: -103.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 17:04:14,217 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 106.6 MB in the beginning and 106.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:04:14,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.28 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 87.5 MB in the beginning and 178.7 MB in the end (delta: -91.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:14,219 INFO L168 Benchmark]: Boogie Preprocessor took 53.98 ms. Allocated memory is still 200.3 MB. Free memory was 178.7 MB in the beginning and 176.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:14,220 INFO L168 Benchmark]: RCFGBuilder took 384.52 ms. Allocated memory is still 200.3 MB. Free memory was 176.4 MB in the beginning and 160.2 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:14,221 INFO L168 Benchmark]: TraceAbstraction took 1405.48 ms. Allocated memory was 200.3 MB in the beginning and 226.5 MB in the end (delta: 26.2 MB). Free memory was 159.6 MB in the beginning and 191.6 MB in the end (delta: -32.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 17:04:14,225 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 106.6 MB in the beginning and 106.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 347.28 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 87.5 MB in the beginning and 178.7 MB in the end (delta: -91.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.98 ms. Allocated memory is still 200.3 MB. Free memory was 178.7 MB in the beginning and 176.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 384.52 ms. Allocated memory is still 200.3 MB. Free memory was 176.4 MB in the beginning and 160.2 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1405.48 ms. Allocated memory was 200.3 MB in the beginning and 226.5 MB in the end (delta: 26.2 MB). Free memory was 159.6 MB in the beginning and 191.6 MB in the end (delta: -32.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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 6 procedures, 39 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 100 SDtfs, 42 SDslu, 411 SDs, 0 SdLazy, 143 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 2672 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...