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/loop-invgen/id_build.i.p+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:52:07,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:52:07,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:52:07,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-03 20:52:07,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:52:07,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:52:07,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:52:07,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:52:07,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:52:07,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:52:07,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:52:07,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:52:07,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:52:07,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:52:07,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:52:07,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:52:07,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:52:07,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 20:52:07,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 20:52:07,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 20:52:07,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 20:52:07,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 20:52:07,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 20:52:07,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 20:52:07,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 20:52:07,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:52:07,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:52:07,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:52:07,162 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 [2019-09-03 20:52:07,176 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:52:07,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:52:07,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 20:52:07,177 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 20:52:07,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 20:52:07,178 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 20:52:07,178 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 20:52:07,178 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 20:52:07,178 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 20:52:07,179 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 20:52:07,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:52:07,179 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:52:07,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:52:07,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:52:07,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:52:07,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:52:07,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:52:07,181 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:52:07,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:52:07,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:52:07,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:52:07,181 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 20:52:07,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:52:07,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:52:07,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:52:07,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:52:07,182 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 20:52:07,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:52:07,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:52:07,183 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 20:52:07,216 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:52:07,228 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:52:07,231 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:52:07,232 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:52:07,233 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:52:07,234 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.p+sep-reducer.c [2019-09-03 20:52:07,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5d00ac7/042af1385f714c53b4bd3fddd7a926ba/FLAG99165dfde [2019-09-03 20:52:07,837 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:52:07,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+sep-reducer.c [2019-09-03 20:52:07,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5d00ac7/042af1385f714c53b4bd3fddd7a926ba/FLAG99165dfde [2019-09-03 20:52:08,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5d00ac7/042af1385f714c53b4bd3fddd7a926ba [2019-09-03 20:52:08,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:52:08,163 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:52:08,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:52:08,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:52:08,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:52:08,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:52:08" (1/1) ... [2019-09-03 20:52:08,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61fa6ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:08, skipping insertion in model container [2019-09-03 20:52:08,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:52:08" (1/1) ... [2019-09-03 20:52:08,178 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:52:08,261 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:52:08,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:52:08,784 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:52:08,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:52:09,004 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:52:09,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:09 WrapperNode [2019-09-03 20:52:09,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:52:09,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:52:09,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:52:09,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:52:09,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:09" (1/1) ... [2019-09-03 20:52:09,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:09" (1/1) ... [2019-09-03 20:52:09,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:09" (1/1) ... [2019-09-03 20:52:09,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:09" (1/1) ... [2019-09-03 20:52:09,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:09" (1/1) ... [2019-09-03 20:52:09,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:09" (1/1) ... [2019-09-03 20:52:09,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:09" (1/1) ... [2019-09-03 20:52:09,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:52:09,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:52:09,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:52:09,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:52:09,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:09" (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 [2019-09-03 20:52:09,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:52:09,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:52:09,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:52:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:52:09,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 20:52:09,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:52:09,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 20:52:09,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:52:09,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:52:09,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:52:10,413 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:52:10,413 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-03 20:52:10,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:52:10 BoogieIcfgContainer [2019-09-03 20:52:10,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:52:10,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:52:10,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:52:10,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:52:10,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:52:08" (1/3) ... [2019-09-03 20:52:10,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:52:10, skipping insertion in model container [2019-09-03 20:52:10,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:09" (2/3) ... [2019-09-03 20:52:10,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:52:10, skipping insertion in model container [2019-09-03 20:52:10,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:52:10" (3/3) ... [2019-09-03 20:52:10,422 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i.p+sep-reducer.c [2019-09-03 20:52:10,431 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:52:10,441 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-09-03 20:52:10,457 INFO L252 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-09-03 20:52:10,500 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:52:10,500 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 20:52:10,500 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:52:10,500 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:52:10,501 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:52:10,501 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:52:10,501 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:52:10,501 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:52:10,522 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states. [2019-09-03 20:52:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-09-03 20:52:10,549 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:52:10,550 INFO L399 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:52:10,552 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:52:10,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:52:10,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1633347547, now seen corresponding path program 1 times [2019-09-03 20:52:10,561 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:52:10,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:52:10,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:52:10,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:52:10,614 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:52:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:52:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:52:11,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:52:11,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 20:52:11,036 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:52:11,042 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 20:52:11,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 20:52:11,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:52:11,059 INFO L87 Difference]: Start difference. First operand 252 states. Second operand 5 states. [2019-09-03 20:52:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:52:11,815 INFO L93 Difference]: Finished difference Result 261 states and 495 transitions. [2019-09-03 20:52:11,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 20:52:11,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2019-09-03 20:52:11,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:52:11,839 INFO L225 Difference]: With dead ends: 261 [2019-09-03 20:52:11,840 INFO L226 Difference]: Without dead ends: 253 [2019-09-03 20:52:11,842 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-03 20:52:11,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2019-09-03 20:52:11,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 246. [2019-09-03 20:52:11,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2019-09-03 20:52:11,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 283 transitions. [2019-09-03 20:52:11,924 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 283 transitions. Word has length 138 [2019-09-03 20:52:11,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:52:11,927 INFO L475 AbstractCegarLoop]: Abstraction has 246 states and 283 transitions. [2019-09-03 20:52:11,928 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 20:52:11,928 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 283 transitions. [2019-09-03 20:52:11,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-09-03 20:52:11,933 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:52:11,934 INFO L399 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:52:11,934 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:52:11,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:52:11,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1070545246, now seen corresponding path program 1 times [2019-09-03 20:52:11,935 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:52:11,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:52:11,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:52:11,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:52:11,937 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:52:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:52:12,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:52:12,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:52:12,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 20:52:12,145 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:52:12,150 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 20:52:12,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 20:52:12,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:52:12,151 INFO L87 Difference]: Start difference. First operand 246 states and 283 transitions. Second operand 5 states. [2019-09-03 20:52:12,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:52:12,755 INFO L93 Difference]: Finished difference Result 256 states and 296 transitions. [2019-09-03 20:52:12,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-03 20:52:12,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2019-09-03 20:52:12,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:52:12,758 INFO L225 Difference]: With dead ends: 256 [2019-09-03 20:52:12,758 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 20:52:12,759 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-09-03 20:52:12,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 20:52:12,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 20:52:12,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 20:52:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 20:52:12,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2019-09-03 20:52:12,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:52:12,761 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 20:52:12,761 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 20:52:12,762 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 20:52:12,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 20:52:12,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:52:12 BoogieIcfgContainer [2019-09-03 20:52:12,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:52:12,769 INFO L168 Benchmark]: Toolchain (without parser) took 4605.43 ms. Allocated memory was 132.6 MB in the beginning and 267.4 MB in the end (delta: 134.7 MB). Free memory was 87.5 MB in the beginning and 195.7 MB in the end (delta: -108.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2019-09-03 20:52:12,770 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 132.6 MB. Free memory was 106.8 MB in the beginning and 106.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:52:12,771 INFO L168 Benchmark]: CACSL2BoogieTranslator took 842.16 ms. Allocated memory was 132.6 MB in the beginning and 202.4 MB in the end (delta: 69.7 MB). Free memory was 87.3 MB in the beginning and 161.5 MB in the end (delta: -74.3 MB). Peak memory consumption was 41.3 MB. Max. memory is 7.1 GB. [2019-09-03 20:52:12,772 INFO L168 Benchmark]: Boogie Preprocessor took 151.51 ms. Allocated memory is still 202.4 MB. Free memory was 161.5 MB in the beginning and 157.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2019-09-03 20:52:12,773 INFO L168 Benchmark]: RCFGBuilder took 1257.02 ms. Allocated memory was 202.4 MB in the beginning and 226.5 MB in the end (delta: 24.1 MB). Free memory was 156.6 MB in the beginning and 149.4 MB in the end (delta: 7.3 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. [2019-09-03 20:52:12,774 INFO L168 Benchmark]: TraceAbstraction took 2350.93 ms. Allocated memory was 226.5 MB in the beginning and 267.4 MB in the end (delta: 40.9 MB). Free memory was 148.0 MB in the beginning and 195.7 MB in the end (delta: -47.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-03 20:52:12,778 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 132.6 MB. Free memory was 106.8 MB in the beginning and 106.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 842.16 ms. Allocated memory was 132.6 MB in the beginning and 202.4 MB in the end (delta: 69.7 MB). Free memory was 87.3 MB in the beginning and 161.5 MB in the end (delta: -74.3 MB). Peak memory consumption was 41.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.51 ms. Allocated memory is still 202.4 MB. Free memory was 161.5 MB in the beginning and 157.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1257.02 ms. Allocated memory was 202.4 MB in the beginning and 226.5 MB in the end (delta: 24.1 MB). Free memory was 156.6 MB in the beginning and 149.4 MB in the end (delta: 7.3 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2350.93 ms. Allocated memory was 226.5 MB in the beginning and 267.4 MB in the end (delta: 40.9 MB). Free memory was 148.0 MB in the beginning and 195.7 MB in the end (delta: -47.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1998]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 2307]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 252 locations, 2 error locations. SAFE Result, 2.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 379 SDtfs, 791 SDslu, 651 SDs, 0 SdLazy, 1158 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=252occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 83140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...