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-crafted/zero_sum1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:29:32,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:29:32,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:29:32,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:29:32,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:29:32,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:29:32,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:29:32,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:29:32,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:29:33,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:29:33,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:29:33,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:29:33,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:29:33,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:29:33,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:29:33,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:29:33,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:29:33,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:29:33,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:29:33,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:29:33,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:29:33,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:29:33,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:29:33,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:29:33,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 16:29:33,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 16:29:33,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 16:29:33,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 16:29:33,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 16:29:33,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 16:29:33,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:29:33,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:29:33,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:29:33,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:29:33,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:29:33,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:29:33,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:29:33,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:29:33,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:29:33,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:29:33,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:29:33,041 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 16:29:33,072 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:29:33,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:29:33,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:29:33,074 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:29:33,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:29:33,075 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:29:33,075 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:29:33,075 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:29:33,075 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:29:33,075 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:29:33,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:29:33,078 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:29:33,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:29:33,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:29:33,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:29:33,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:29:33,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:29:33,080 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:29:33,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:29:33,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:29:33,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:29:33,081 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:29:33,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:29:33,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:33,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:29:33,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:29:33,082 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:29:33,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:29:33,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:29:33,082 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:29:33,139 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:29:33,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:29:33,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:29:33,158 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:29:33,158 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:29:33,159 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum1.c [2019-10-02 16:29:33,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d0af28c/704d58931664452e9af46e0e5b2c1cda/FLAG7a2d1f0e8 [2019-10-02 16:29:33,684 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:29:33,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum1.c [2019-10-02 16:29:33,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d0af28c/704d58931664452e9af46e0e5b2c1cda/FLAG7a2d1f0e8 [2019-10-02 16:29:34,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d0af28c/704d58931664452e9af46e0e5b2c1cda [2019-10-02 16:29:34,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:29:34,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:29:34,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:34,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:29:34,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:29:34,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:34" (1/1) ... [2019-10-02 16:29:34,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@616dfd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:34, skipping insertion in model container [2019-10-02 16:29:34,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:34" (1/1) ... [2019-10-02 16:29:34,115 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:29:34,139 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:29:34,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:34,387 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:29:34,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:34,524 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:29:34,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:34 WrapperNode [2019-10-02 16:29:34,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:34,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:29:34,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:29:34,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:29:34,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:34" (1/1) ... [2019-10-02 16:29:34,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:34" (1/1) ... [2019-10-02 16:29:34,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:34" (1/1) ... [2019-10-02 16:29:34,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:34" (1/1) ... [2019-10-02 16:29:34,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:34" (1/1) ... [2019-10-02 16:29:34,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:34" (1/1) ... [2019-10-02 16:29:34,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:34" (1/1) ... [2019-10-02 16:29:34,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:29:34,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:29:34,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:29:34,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:29:34,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:34" (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 16:29:34,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:29:34,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:29:34,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:29:34,647 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:29:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:29:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 16:29:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:29:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2019-10-02 16:29:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:29:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:29:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:29:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:29:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:29:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:29:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:29:34,879 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:29:34,880 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-02 16:29:34,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:34 BoogieIcfgContainer [2019-10-02 16:29:34,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:29:34,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:29:34,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:29:34,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:29:34,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:29:34" (1/3) ... [2019-10-02 16:29:34,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5222e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:34, skipping insertion in model container [2019-10-02 16:29:34,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:34" (2/3) ... [2019-10-02 16:29:34,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5222e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:34, skipping insertion in model container [2019-10-02 16:29:34,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:34" (3/3) ... [2019-10-02 16:29:34,890 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum1.c [2019-10-02 16:29:34,901 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:29:34,911 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:29:34,963 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:29:35,009 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:29:35,009 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:29:35,010 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:29:35,010 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:29:35,010 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:29:35,010 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:29:35,011 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:29:35,011 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:29:35,033 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-10-02 16:29:35,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 16:29:35,045 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:35,046 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:35,048 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:35,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:35,053 INFO L82 PathProgramCache]: Analyzing trace with hash -714575113, now seen corresponding path program 1 times [2019-10-02 16:29:35,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:35,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:35,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:35,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:35,105 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:35,188 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 16:29:35,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:35,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:29:35,190 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:35,194 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:35,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:35,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:35,208 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-10-02 16:29:35,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:35,222 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-10-02 16:29:35,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:35,224 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-02 16:29:35,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:35,233 INFO L225 Difference]: With dead ends: 28 [2019-10-02 16:29:35,233 INFO L226 Difference]: Without dead ends: 20 [2019-10-02 16:29:35,235 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 16:29:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-02 16:29:35,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-02 16:29:35,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-02 16:29:35,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-10-02 16:29:35,268 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2019-10-02 16:29:35,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:35,269 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-10-02 16:29:35,269 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:35,269 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-10-02 16:29:35,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 16:29:35,270 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:35,270 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:35,271 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:35,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:35,271 INFO L82 PathProgramCache]: Analyzing trace with hash 504621157, now seen corresponding path program 1 times [2019-10-02 16:29:35,272 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:35,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:35,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:35,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:35,274 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:35,377 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 16:29:35,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:35,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 16:29:35,377 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:35,379 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 16:29:35,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 16:29:35,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 16:29:35,380 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2019-10-02 16:29:35,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:35,443 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2019-10-02 16:29:35,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 16:29:35,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-02 16:29:35,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:35,445 INFO L225 Difference]: With dead ends: 26 [2019-10-02 16:29:35,445 INFO L226 Difference]: Without dead ends: 23 [2019-10-02 16:29:35,446 INFO L640 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 [2019-10-02 16:29:35,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-02 16:29:35,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-02 16:29:35,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-02 16:29:35,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-10-02 16:29:35,451 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2019-10-02 16:29:35,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:35,452 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-10-02 16:29:35,452 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 16:29:35,452 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-10-02 16:29:35,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-02 16:29:35,453 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:35,453 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:35,453 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:35,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:35,454 INFO L82 PathProgramCache]: Analyzing trace with hash 626778659, now seen corresponding path program 1 times [2019-10-02 16:29:35,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:35,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:35,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:35,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:35,457 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:35,518 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 16:29:35,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:35,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:35,519 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:35,519 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:35,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:35,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:35,520 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 3 states. [2019-10-02 16:29:35,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:35,548 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-10-02 16:29:35,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:35,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-02 16:29:35,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:35,550 INFO L225 Difference]: With dead ends: 25 [2019-10-02 16:29:35,550 INFO L226 Difference]: Without dead ends: 25 [2019-10-02 16:29:35,550 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 16:29:35,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-02 16:29:35,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-10-02 16:29:35,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-02 16:29:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-10-02 16:29:35,555 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 18 [2019-10-02 16:29:35,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:35,556 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-10-02 16:29:35,556 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:35,556 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-10-02 16:29:35,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-02 16:29:35,557 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:35,557 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 16:29:35,558 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:35,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:35,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1697854689, now seen corresponding path program 1 times [2019-10-02 16:29:35,558 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:35,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:35,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:35,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:35,561 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:35,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-02 16:29:35,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:35,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:29:35,624 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:35,624 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:29:35,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:29:35,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:29:35,626 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 4 states. [2019-10-02 16:29:35,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:35,681 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-10-02 16:29:35,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:29:35,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-10-02 16:29:35,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:35,683 INFO L225 Difference]: With dead ends: 25 [2019-10-02 16:29:35,683 INFO L226 Difference]: Without dead ends: 25 [2019-10-02 16:29:35,684 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:29:35,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-02 16:29:35,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2019-10-02 16:29:35,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-02 16:29:35,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-10-02 16:29:35,688 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2019-10-02 16:29:35,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:35,688 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-10-02 16:29:35,688 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:29:35,689 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-10-02 16:29:35,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-02 16:29:35,689 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:35,689 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, 1, 1] [2019-10-02 16:29:35,690 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:35,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:35,690 INFO L82 PathProgramCache]: Analyzing trace with hash 661319647, now seen corresponding path program 1 times [2019-10-02 16:29:35,690 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:35,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:35,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:35,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:35,692 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-02 16:29:35,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:29:35,764 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:29:35,765 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2019-10-02 16:29:35,766 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [14], [16], [18], [22], [28], [30], [32], [36], [42], [44], [46], [57], [60], [62], [68], [69], [70], [72] [2019-10-02 16:29:35,799 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:29:35,800 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:29:35,866 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:29:35,867 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 26 variables. [2019-10-02 16:29:35,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:35,871 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:29:35,906 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-10-02 16:29:35,906 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:29:35,911 INFO L420 sIntCurrentIteration]: We unified 21 AI predicates to 21 [2019-10-02 16:29:35,911 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:29:35,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:29:35,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2019-10-02 16:29:35,912 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:35,913 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:35,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:35,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:35,914 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2019-10-02 16:29:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:35,916 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-10-02 16:29:35,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:35,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-02 16:29:35,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:35,917 INFO L225 Difference]: With dead ends: 7 [2019-10-02 16:29:35,917 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:29:35,917 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 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 16:29:35,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:29:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:29:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:29:35,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:29:35,918 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-10-02 16:29:35,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:35,919 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:29:35,919 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:35,919 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:29:35,919 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:29:35,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:29:35 BoogieIcfgContainer [2019-10-02 16:29:35,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:29:35,927 INFO L168 Benchmark]: Toolchain (without parser) took 1829.94 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 83.9 MB in the beginning and 97.3 MB in the end (delta: -13.4 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:35,928 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 102.5 MB in the beginning and 102.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:29:35,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.11 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 83.7 MB in the beginning and 176.5 MB in the end (delta: -92.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:35,930 INFO L168 Benchmark]: Boogie Preprocessor took 47.63 ms. Allocated memory is still 198.2 MB. Free memory was 176.5 MB in the beginning and 173.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:35,931 INFO L168 Benchmark]: RCFGBuilder took 306.24 ms. Allocated memory is still 198.2 MB. Free memory was 173.9 MB in the beginning and 159.3 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:35,932 INFO L168 Benchmark]: TraceAbstraction took 1041.89 ms. Allocated memory is still 198.2 MB. Free memory was 159.3 MB in the beginning and 97.3 MB in the end (delta: 62.0 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:35,937 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 137.9 MB. Free memory was 102.5 MB in the beginning and 102.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 429.11 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 83.7 MB in the beginning and 176.5 MB in the end (delta: -92.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.63 ms. Allocated memory is still 198.2 MB. Free memory was 176.5 MB in the beginning and 173.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 306.24 ms. Allocated memory is still 198.2 MB. Free memory was 173.9 MB in the beginning and 159.3 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1041.89 ms. Allocated memory is still 198.2 MB. Free memory was 159.3 MB in the beginning and 97.3 MB in the end (delta: 62.0 MB). Peak memory consumption was 62.0 MB. 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 4 procedures, 28 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 90 SDtfs, 20 SDslu, 75 SDs, 0 SdLazy, 47 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 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, 0.9523809523809523 AbsIntWeakeningRatio, 0.8571428571428571 AbsIntAvgWeakeningVarsNumRemoved, 0.7619047619047619 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2515 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 5/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...