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_copy4_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:29:50,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:29:50,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:29:50,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:29:50,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:29:50,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:29:50,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:29:50,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:29:50,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:29:50,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:29:50,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:29:50,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:29:50,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:29:50,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:29:50,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:29:50,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:29:50,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:29:50,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:29:50,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:29:50,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:29:50,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:29:50,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:29:50,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:29:50,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:29:50,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:29:50,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:29:50,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:29:50,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:29:50,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:29:50,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:29:50,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:29:50,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:29:50,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:29:50,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:29:50,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:29:50,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:29:50,217 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 16:29:50,231 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:29:50,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:29:50,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:29:50,232 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:29:50,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:29:50,232 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:29:50,233 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:29:50,233 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:29:50,233 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:29:50,233 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:29:50,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:29:50,234 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:29:50,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:29:50,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:29:50,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:29:50,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:29:50,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:29:50,235 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:29:50,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:29:50,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:29:50,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:29:50,236 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:29:50,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:29:50,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:50,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:29:50,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:29:50,237 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:29:50,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:29:50,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:29:50,238 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:29:50,266 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:29:50,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:29:50,283 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:29:50,284 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:29:50,285 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:29:50,286 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy4_ground-2.i [2019-10-02 16:29:50,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cb3faaf9/5a19e8225bc945e2b3247db4a3c0d25b/FLAG0ceafa8e6 [2019-10-02 16:29:50,789 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:29:50,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy4_ground-2.i [2019-10-02 16:29:50,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cb3faaf9/5a19e8225bc945e2b3247db4a3c0d25b/FLAG0ceafa8e6 [2019-10-02 16:29:51,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cb3faaf9/5a19e8225bc945e2b3247db4a3c0d25b [2019-10-02 16:29:51,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:29:51,188 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:29:51,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:51,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:29:51,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:29:51,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fac7d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51, skipping insertion in model container [2019-10-02 16:29:51,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,205 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:29:51,230 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:29:51,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:51,506 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:29:51,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:51,551 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:29:51,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51 WrapperNode [2019-10-02 16:29:51,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:51,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:29:51,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:29:51,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:29:51,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:29:51,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:29:51,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:29:51,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:29:51,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (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 16:29:51,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:29:51,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:29:51,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:29:51,753 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:29:51,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:29:51,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:29:51,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:29:51,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:29:51,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:29:51,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:29:51,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:29:51,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:29:51,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:29:51,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:29:52,093 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:29:52,094 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-02 16:29:52,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:52 BoogieIcfgContainer [2019-10-02 16:29:52,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:29:52,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:29:52,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:29:52,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:29:52,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:29:51" (1/3) ... [2019-10-02 16:29:52,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176c3a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:52, skipping insertion in model container [2019-10-02 16:29:52,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (2/3) ... [2019-10-02 16:29:52,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176c3a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:52, skipping insertion in model container [2019-10-02 16:29:52,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:52" (3/3) ... [2019-10-02 16:29:52,104 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy4_ground-2.i [2019-10-02 16:29:52,111 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:29:52,118 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:29:52,135 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:29:52,161 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:29:52,161 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:29:52,161 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:29:52,161 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:29:52,161 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:29:52,161 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:29:52,162 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:29:52,162 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:29:52,176 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-10-02 16:29:52,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-02 16:29:52,185 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:52,186 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] [2019-10-02 16:29:52,188 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:52,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:52,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1010407240, now seen corresponding path program 1 times [2019-10-02 16:29:52,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:52,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:52,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,247 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:52,350 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 16:29:52,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:52,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:29:52,353 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:52,359 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:52,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:52,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:52,379 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-10-02 16:29:52,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:52,394 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2019-10-02 16:29:52,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:52,395 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2019-10-02 16:29:52,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:52,403 INFO L225 Difference]: With dead ends: 36 [2019-10-02 16:29:52,404 INFO L226 Difference]: Without dead ends: 31 [2019-10-02 16:29:52,405 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 16:29:52,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-02 16:29:52,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-10-02 16:29:52,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-02 16:29:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-10-02 16:29:52,441 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 21 [2019-10-02 16:29:52,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:52,441 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-10-02 16:29:52,441 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:52,441 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-10-02 16:29:52,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-02 16:29:52,442 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:52,442 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] [2019-10-02 16:29:52,443 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:52,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:52,443 INFO L82 PathProgramCache]: Analyzing trace with hash 555030978, now seen corresponding path program 1 times [2019-10-02 16:29:52,444 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:52,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:52,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,449 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:52,514 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 16:29:52,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:52,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:52,520 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:52,521 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:52,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:52,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:52,522 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 3 states. [2019-10-02 16:29:52,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:52,543 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-10-02 16:29:52,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:52,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-10-02 16:29:52,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:52,545 INFO L225 Difference]: With dead ends: 33 [2019-10-02 16:29:52,545 INFO L226 Difference]: Without dead ends: 33 [2019-10-02 16:29:52,546 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 16:29:52,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-02 16:29:52,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-10-02 16:29:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-02 16:29:52,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-10-02 16:29:52,553 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 21 [2019-10-02 16:29:52,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:52,554 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-10-02 16:29:52,554 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:52,554 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2019-10-02 16:29:52,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-02 16:29:52,555 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:52,555 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, 1] [2019-10-02 16:29:52,556 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:52,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:52,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1099948320, now seen corresponding path program 1 times [2019-10-02 16:29:52,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:52,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:52,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,559 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:52,642 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 16:29:52,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:52,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:52,643 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:52,644 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:52,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:52,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:52,645 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 3 states. [2019-10-02 16:29:52,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:52,717 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2019-10-02 16:29:52,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:52,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-02 16:29:52,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:52,719 INFO L225 Difference]: With dead ends: 40 [2019-10-02 16:29:52,719 INFO L226 Difference]: Without dead ends: 40 [2019-10-02 16:29:52,720 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 16:29:52,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-02 16:29:52,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-10-02 16:29:52,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-02 16:29:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-10-02 16:29:52,726 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 23 [2019-10-02 16:29:52,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:52,726 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-10-02 16:29:52,726 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:52,726 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-10-02 16:29:52,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-02 16:29:52,728 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:52,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:52,728 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:52,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:52,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1986876888, now seen corresponding path program 1 times [2019-10-02 16:29:52,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:52,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:52,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,731 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-02 16:29:52,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:29:52,807 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:29:52,808 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 32 with the following transitions: [2019-10-02 16:29:52,809 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [25], [27], [29], [33], [39], [41], [43], [47], [53], [55], [57], [61], [67], [69], [71], [75], [83], [93], [96], [98], [104], [105], [106], [108] [2019-10-02 16:29:52,848 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:29:52,849 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:29:52,950 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:29:52,952 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 38 variables. [2019-10-02 16:29:52,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:52,956 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:29:53,022 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:29:53,022 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:29:53,025 INFO L420 sIntCurrentIteration]: We unified 30 AI predicates to 30 [2019-10-02 16:29:53,025 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:29:53,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:29:53,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-02 16:29:53,026 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:53,027 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:53,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:53,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:53,028 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 2 states. [2019-10-02 16:29:53,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:53,030 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:29:53,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:53,031 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-10-02 16:29:53,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:53,031 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:29:53,032 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:29:53,032 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 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 16:29:53,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:29:53,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:29:53,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:29:53,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:29:53,034 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-10-02 16:29:53,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:53,035 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:29:53,035 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:53,035 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:29:53,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:29:53,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:29:53 BoogieIcfgContainer [2019-10-02 16:29:53,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:29:53,045 INFO L168 Benchmark]: Toolchain (without parser) took 1855.69 ms. Allocated memory was 134.2 MB in the beginning and 199.2 MB in the end (delta: 65.0 MB). Free memory was 90.6 MB in the beginning and 103.3 MB in the end (delta: -12.7 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:53,046 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 134.2 MB. Free memory was 108.3 MB in the beginning and 108.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:29:53,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.62 ms. Allocated memory is still 134.2 MB. Free memory was 90.4 MB in the beginning and 79.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:53,052 INFO L168 Benchmark]: Boogie Preprocessor took 133.44 ms. Allocated memory was 134.2 MB in the beginning and 199.2 MB in the end (delta: 65.0 MB). Free memory was 79.8 MB in the beginning and 174.7 MB in the end (delta: -94.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:53,054 INFO L168 Benchmark]: RCFGBuilder took 409.02 ms. Allocated memory is still 199.2 MB. Free memory was 174.7 MB in the beginning and 156.7 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:53,054 INFO L168 Benchmark]: TraceAbstraction took 944.94 ms. Allocated memory is still 199.2 MB. Free memory was 156.1 MB in the beginning and 103.3 MB in the end (delta: 52.7 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:53,058 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 134.2 MB. Free memory was 108.3 MB in the beginning and 108.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 363.62 ms. Allocated memory is still 134.2 MB. Free memory was 90.4 MB in the beginning and 79.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.44 ms. Allocated memory was 134.2 MB in the beginning and 199.2 MB in the end (delta: 65.0 MB). Free memory was 79.8 MB in the beginning and 174.7 MB in the end (delta: -94.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 409.02 ms. Allocated memory is still 199.2 MB. Free memory was 174.7 MB in the beginning and 156.7 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 944.94 ms. Allocated memory is still 199.2 MB. Free memory was 156.1 MB in the beginning and 103.3 MB in the end (delta: 52.7 MB). Peak memory consumption was 52.7 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, 36 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 108 SDtfs, 5 SDslu, 52 SDs, 0 SdLazy, 25 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 0.9083333333333333 AbsIntWeakeningRatio, 1.0333333333333334 AbsIntAvgWeakeningVarsNumRemoved, 0.2 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 2448 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 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...