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/loops/sum01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 12:45:59,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 12:45:59,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 12:45:59,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-05 12:45:59,226 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-05 12:45:59,240 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 12:45:59,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 12:45:59,241 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-05 12:45:59,241 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-05 12:45:59,241 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-05 12:45:59,242 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-05 12:45:59,242 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-05 12:45:59,242 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-05 12:45:59,242 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-05 12:45:59,242 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-05 12:45:59,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 12:45:59,243 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 12:45:59,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 12:45:59,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 12:45:59,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 12:45:59,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 12:45:59,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 12:45:59,244 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 12:45:59,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 12:45:59,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 12:45:59,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 12:45:59,245 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-05 12:45:59,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 12:45:59,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 12:45:59,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 12:45:59,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 12:45:59,246 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-05 12:45:59,246 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 12:45:59,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 12:45:59,247 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-05 12:45:59,275 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 12:45:59,287 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 12:45:59,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 12:45:59,292 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 12:45:59,292 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 12:45:59,293 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2019-09-05 12:45:59,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8131b216/a6cf341e121f45a0a88f992c0005dcdc/FLAG688315465 [2019-09-05 12:45:59,775 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 12:45:59,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i [2019-09-05 12:45:59,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8131b216/a6cf341e121f45a0a88f992c0005dcdc/FLAG688315465 [2019-09-05 12:46:00,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8131b216/a6cf341e121f45a0a88f992c0005dcdc [2019-09-05 12:46:00,200 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 12:46:00,201 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 12:46:00,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 12:46:00,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 12:46:00,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 12:46:00,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:46:00" (1/1) ... [2019-09-05 12:46:00,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af94a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:00, skipping insertion in model container [2019-09-05 12:46:00,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:46:00" (1/1) ... [2019-09-05 12:46:00,217 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 12:46:00,235 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 12:46:00,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:46:00,440 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 12:46:00,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:46:00,476 INFO L192 MainTranslator]: Completed translation [2019-09-05 12:46:00,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:00 WrapperNode [2019-09-05 12:46:00,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 12:46:00,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 12:46:00,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 12:46:00,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 12:46:00,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:00" (1/1) ... [2019-09-05 12:46:00,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:00" (1/1) ... [2019-09-05 12:46:00,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:00" (1/1) ... [2019-09-05 12:46:00,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:00" (1/1) ... [2019-09-05 12:46:00,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:00" (1/1) ... [2019-09-05 12:46:00,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:00" (1/1) ... [2019-09-05 12:46:00,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:00" (1/1) ... [2019-09-05 12:46:00,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 12:46:00,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 12:46:00,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 12:46:00,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 12:46:00,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 12:46:00,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 12:46:00,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 12:46:00,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 12:46:00,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 12:46:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 12:46:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 12:46:00,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 12:46:00,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-05 12:46:00,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 12:46:00,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 12:46:00,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 12:46:00,816 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 12:46:00,817 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-05 12:46:00,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:46:00 BoogieIcfgContainer [2019-09-05 12:46:00,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 12:46:00,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 12:46:00,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 12:46:00,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 12:46:00,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 12:46:00" (1/3) ... [2019-09-05 12:46:00,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e1c756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:46:00, skipping insertion in model container [2019-09-05 12:46:00,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:00" (2/3) ... [2019-09-05 12:46:00,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e1c756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:46:00, skipping insertion in model container [2019-09-05 12:46:00,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:46:00" (3/3) ... [2019-09-05 12:46:00,835 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2019-09-05 12:46:00,848 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 12:46:00,856 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 12:46:00,878 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 12:46:00,928 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 12:46:00,928 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-05 12:46:00,929 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 12:46:00,929 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 12:46:00,929 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 12:46:00,932 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 12:46:00,932 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 12:46:00,932 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 12:46:00,958 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-05 12:46:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-05 12:46:00,967 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:46:00,968 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:46:00,970 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:46:00,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:46:00,978 INFO L82 PathProgramCache]: Analyzing trace with hash 579653156, now seen corresponding path program 1 times [2019-09-05 12:46:00,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:46:01,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:01,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:46:01,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:01,025 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:46:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:46:01,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:46:01,081 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:46:01,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 12:46:01,081 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 12:46:01,084 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 12:46:01,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 12:46:01,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:46:01,098 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-09-05 12:46:01,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:46:01,110 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-09-05 12:46:01,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 12:46:01,112 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-05 12:46:01,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:46:01,120 INFO L225 Difference]: With dead ends: 19 [2019-09-05 12:46:01,120 INFO L226 Difference]: Without dead ends: 13 [2019-09-05 12:46:01,121 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:46:01,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-05 12:46:01,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-05 12:46:01,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-05 12:46:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-05 12:46:01,148 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-09-05 12:46:01,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:46:01,149 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-05 12:46:01,149 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 12:46:01,149 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-05 12:46:01,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-05 12:46:01,150 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:46:01,150 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:46:01,150 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:46:01,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:46:01,151 INFO L82 PathProgramCache]: Analyzing trace with hash 574112030, now seen corresponding path program 1 times [2019-09-05 12:46:01,151 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:46:01,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:01,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:46:01,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:01,153 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:46:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:46:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:46:01,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:46:01,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-05 12:46:01,253 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 12:46:01,254 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 12:46:01,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 12:46:01,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-05 12:46:01,255 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-09-05 12:46:01,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:46:01,312 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-09-05 12:46:01,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-05 12:46:01,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-09-05 12:46:01,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:46:01,313 INFO L225 Difference]: With dead ends: 17 [2019-09-05 12:46:01,313 INFO L226 Difference]: Without dead ends: 14 [2019-09-05 12:46:01,314 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-05 12:46:01,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-05 12:46:01,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-05 12:46:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-05 12:46:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-09-05 12:46:01,318 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2019-09-05 12:46:01,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:46:01,319 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-09-05 12:46:01,319 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 12:46:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-09-05 12:46:01,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-05 12:46:01,320 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:46:01,320 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:46:01,320 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:46:01,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:46:01,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1164206820, now seen corresponding path program 1 times [2019-09-05 12:46:01,321 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:46:01,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:01,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:46:01,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:01,323 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:46:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:46:01,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:46:01,563 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 12:46:01,566 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-05 12:46:01,567 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2019-09-05 12:46:01,572 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [14], [16], [18], [24], [27], [29], [35], [36], [37], [39] [2019-09-05 12:46:01,607 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-05 12:46:01,607 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-05 12:46:01,762 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-05 12:46:01,766 INFO L272 AbstractInterpreter]: Visited 13 different actions 48 times. Merged at 3 different actions 15 times. Widened at 1 different actions 3 times. Performed 77 root evaluator evaluations with a maximum evaluation depth of 6. Performed 77 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2019-09-05 12:46:01,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:46:01,770 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-05 12:46:01,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 12:46:01,771 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 12:46:01,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:46:01,783 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-05 12:46:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:46:01,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-05 12:46:01,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 12:46:01,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 12:46:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:46:02,017 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 12:46:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:46:02,238 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-05 12:46:02,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2019-09-05 12:46:02,239 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-05 12:46:02,239 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-05 12:46:02,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-05 12:46:02,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2019-09-05 12:46:02,241 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 15 states. [2019-09-05 12:46:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:46:02,418 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-09-05 12:46:02,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-05 12:46:02,419 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2019-09-05 12:46:02,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:46:02,420 INFO L225 Difference]: With dead ends: 22 [2019-09-05 12:46:02,420 INFO L226 Difference]: Without dead ends: 18 [2019-09-05 12:46:02,422 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2019-09-05 12:46:02,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-05 12:46:02,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-05 12:46:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-05 12:46:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-09-05 12:46:02,428 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 13 [2019-09-05 12:46:02,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:46:02,428 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-09-05 12:46:02,428 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-05 12:46:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-09-05 12:46:02,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-05 12:46:02,431 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:46:02,431 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:46:02,431 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:46:02,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:46:02,432 INFO L82 PathProgramCache]: Analyzing trace with hash -2033115496, now seen corresponding path program 2 times [2019-09-05 12:46:02,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:46:02,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:02,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:46:02,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:02,434 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:46:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:46:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-05 12:46:02,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 12:46:02,665 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-05 12:46:02,665 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-05 12:46:02,665 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-05 12:46:02,666 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 12:46:02,666 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 12:46:02,683 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-05 12:46:02,683 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-05 12:46:02,699 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-09-05 12:46:02,699 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-05 12:46:02,700 WARN L254 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-05 12:46:02,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 12:46:02,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 12:46:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:46:02,929 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 12:46:03,294 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:46:03,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-05 12:46:03,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 29 [2019-09-05 12:46:03,299 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-05 12:46:03,300 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-05 12:46:03,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-05 12:46:03,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2019-09-05 12:46:03,301 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 20 states. [2019-09-05 12:46:03,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:46:03,727 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-09-05 12:46:03,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-05 12:46:03,728 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 17 [2019-09-05 12:46:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:46:03,728 INFO L225 Difference]: With dead ends: 19 [2019-09-05 12:46:03,728 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 12:46:03,729 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=223, Invalid=1259, Unknown=0, NotChecked=0, Total=1482 [2019-09-05 12:46:03,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 12:46:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 12:46:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 12:46:03,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 12:46:03,730 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-09-05 12:46:03,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:46:03,731 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 12:46:03,731 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-05 12:46:03,731 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 12:46:03,731 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 12:46:03,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 12:46:03 BoogieIcfgContainer [2019-09-05 12:46:03,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 12:46:03,739 INFO L168 Benchmark]: Toolchain (without parser) took 3536.94 ms. Allocated memory was 130.5 MB in the beginning and 269.0 MB in the end (delta: 138.4 MB). Free memory was 86.1 MB in the beginning and 200.4 MB in the end (delta: -114.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:03,740 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 130.5 MB. Free memory was 104.8 MB in the beginning and 104.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 12:46:03,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.58 ms. Allocated memory is still 130.5 MB. Free memory was 85.9 MB in the beginning and 76.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:03,742 INFO L168 Benchmark]: Boogie Preprocessor took 117.12 ms. Allocated memory was 130.5 MB in the beginning and 198.2 MB in the end (delta: 67.6 MB). Free memory was 76.8 MB in the beginning and 174.9 MB in the end (delta: -98.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:03,743 INFO L168 Benchmark]: RCFGBuilder took 226.88 ms. Allocated memory is still 198.2 MB. Free memory was 174.9 MB in the beginning and 162.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:03,744 INFO L168 Benchmark]: TraceAbstraction took 2914.21 ms. Allocated memory was 198.2 MB in the beginning and 269.0 MB in the end (delta: 70.8 MB). Free memory was 162.8 MB in the beginning and 200.4 MB in the end (delta: -37.6 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:03,747 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 130.5 MB. Free memory was 104.8 MB in the beginning and 104.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.58 ms. Allocated memory is still 130.5 MB. Free memory was 85.9 MB in the beginning and 76.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.12 ms. Allocated memory was 130.5 MB in the beginning and 198.2 MB in the end (delta: 67.6 MB). Free memory was 76.8 MB in the beginning and 174.9 MB in the end (delta: -98.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 226.88 ms. Allocated memory is still 198.2 MB. Free memory was 174.9 MB in the beginning and 162.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2914.21 ms. Allocated memory was 198.2 MB in the beginning and 269.0 MB in the end (delta: 70.8 MB). Free memory was 162.8 MB in the beginning and 200.4 MB in the end (delta: -37.6 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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, 19 locations, 1 error locations. SAFE Result, 2.8s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 SDtfs, 11 SDslu, 141 SDs, 0 SdLazy, 194 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 8 QuantifiedInterpolants, 10376 SizeOfPredicates, 8 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 4/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...