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/nla-digbench/lcm2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:04:05,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:04:05,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:04:05,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:04:05,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:04:05,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:04:05,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:04:05,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:04:05,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:04:05,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:04:05,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:04:05,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:04:05,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:04:05,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:04:05,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:04:05,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:04:05,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:04:05,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:04:05,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:04:05,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:04:05,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:04:05,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:04:05,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:04:05,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:04:05,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:04:05,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:04:05,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:04:05,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:04:05,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:04:05,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:04:05,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:04:05,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:04:05,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:04:05,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:04:05,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:04:05,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:04:05,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:04:05,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:04:05,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:04:05,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:04:05,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:04:05,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-16 17:04:05,228 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:04:05,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:04:05,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:04:05,229 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:04:05,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:04:05,230 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:04:05,230 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:04:05,230 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:04:05,230 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:04:05,230 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:04:05,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:04:05,231 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:04:05,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:04:05,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:04:05,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:04:05,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:04:05,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:04:05,233 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:04:05,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:04:05,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:04:05,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:04:05,234 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:04:05,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:04:05,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:04:05,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:04:05,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:04:05,235 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:04:05,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:04:05,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:04:05,235 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:04:05,267 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:04:05,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:04:05,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:04:05,284 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:04:05,284 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:04:05,285 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/lcm2.c [2019-09-16 17:04:05,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da8b8fe4d/448906c4f8eb4b9bb1d78a9137094578/FLAG302e26dd9 [2019-09-16 17:04:05,781 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:04:05,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm2.c [2019-09-16 17:04:05,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da8b8fe4d/448906c4f8eb4b9bb1d78a9137094578/FLAG302e26dd9 [2019-09-16 17:04:06,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da8b8fe4d/448906c4f8eb4b9bb1d78a9137094578 [2019-09-16 17:04:06,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:04:06,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:04:06,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:04:06,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:04:06,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:04:06,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:04:06" (1/1) ... [2019-09-16 17:04:06,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3385ec24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:06, skipping insertion in model container [2019-09-16 17:04:06,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:04:06" (1/1) ... [2019-09-16 17:04:06,240 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:04:06,262 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:04:06,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:04:06,438 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:04:06,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:04:06,473 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:04:06,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:06 WrapperNode [2019-09-16 17:04:06,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:04:06,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:04:06,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:04:06,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:04:06,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:06" (1/1) ... [2019-09-16 17:04:06,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:06" (1/1) ... [2019-09-16 17:04:06,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:06" (1/1) ... [2019-09-16 17:04:06,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:06" (1/1) ... [2019-09-16 17:04:06,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:06" (1/1) ... [2019-09-16 17:04:06,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:06" (1/1) ... [2019-09-16 17:04:06,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:06" (1/1) ... [2019-09-16 17:04:06,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:04:06,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:04:06,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:04:06,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:04:06,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:04:06,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:04:06,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:04:06,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 17:04:06,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:04:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:04:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:04:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-16 17:04:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 17:04:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:04:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:04:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:04:06,854 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:04:06,854 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-16 17:04:06,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:04:06 BoogieIcfgContainer [2019-09-16 17:04:06,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:04:06,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:04:06,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:04:06,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:04:06,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:04:06" (1/3) ... [2019-09-16 17:04:06,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff345af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:04:06, skipping insertion in model container [2019-09-16 17:04:06,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:06" (2/3) ... [2019-09-16 17:04:06,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff345af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:04:06, skipping insertion in model container [2019-09-16 17:04:06,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:04:06" (3/3) ... [2019-09-16 17:04:06,864 INFO L109 eAbstractionObserver]: Analyzing ICFG lcm2.c [2019-09-16 17:04:06,874 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:04:06,882 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:04:06,899 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:04:06,924 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:04:06,925 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:04:06,925 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:04:06,925 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:04:06,925 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:04:06,925 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:04:06,925 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:04:06,926 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:04:06,939 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-09-16 17:04:06,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-16 17:04:06,947 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:06,948 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:06,950 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:06,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:06,957 INFO L82 PathProgramCache]: Analyzing trace with hash -858950785, now seen corresponding path program 1 times [2019-09-16 17:04:06,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:07,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:07,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:07,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:07,005 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:04:07,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:04:07,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:04:07,083 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:07,087 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:04:07,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:04:07,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:04:07,101 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-09-16 17:04:07,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:07,117 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-09-16 17:04:07,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:04:07,118 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-16 17:04:07,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:07,126 INFO L225 Difference]: With dead ends: 21 [2019-09-16 17:04:07,127 INFO L226 Difference]: Without dead ends: 16 [2019-09-16 17:04:07,128 INFO L636 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 [2019-09-16 17:04:07,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-16 17:04:07,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-16 17:04:07,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-16 17:04:07,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-09-16 17:04:07,167 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-09-16 17:04:07,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:07,168 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-09-16 17:04:07,168 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:04:07,169 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-09-16 17:04:07,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-16 17:04:07,169 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:07,169 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:07,170 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:07,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:07,170 INFO L82 PathProgramCache]: Analyzing trace with hash -871939661, now seen corresponding path program 1 times [2019-09-16 17:04:07,171 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:07,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:07,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:07,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:07,173 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:07,182 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 17:04:07,182 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 17:04:07,183 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-16 17:04:07,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:07,207 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-16 17:04:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:07,228 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-16 17:04:07,229 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-16 17:04:07,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:04:07,231 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 [2019-09-16 17:04:07,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:07,314 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-16 17:04:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:07,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-16 17:04:07,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 17:04:07,540 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 17:04:07,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:04:07,588 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-16 17:04:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:04:07,669 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:04:07,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-09-16 17:04:07,670 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:07,671 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:04:07,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:04:07,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:04:07,672 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2019-09-16 17:04:07,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:07,748 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-09-16 17:04:07,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 17:04:07,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-16 17:04:07,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:07,751 INFO L225 Difference]: With dead ends: 25 [2019-09-16 17:04:07,751 INFO L226 Difference]: Without dead ends: 24 [2019-09-16 17:04:07,752 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:04:07,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-16 17:04:07,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-09-16 17:04:07,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-16 17:04:07,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-09-16 17:04:07,764 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 10 [2019-09-16 17:04:07,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:07,765 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-09-16 17:04:07,765 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:04:07,766 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-09-16 17:04:07,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-16 17:04:07,768 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:07,768 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:07,769 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:07,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:07,770 INFO L82 PathProgramCache]: Analyzing trace with hash 427538464, now seen corresponding path program 1 times [2019-09-16 17:04:07,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:07,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:07,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:07,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:07,780 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:07,788 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 17:04:07,788 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 17:04:07,788 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-16 17:04:07,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:07,806 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-16 17:04:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:07,820 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2019-09-16 17:04:07,822 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [19], [22], [32], [35], [37], [40], [42], [43], [44], [45], [47], [48] [2019-09-16 17:04:07,860 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:04:07,861 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:04:08,146 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-16 17:04:08,149 INFO L272 AbstractInterpreter]: Visited 15 different actions 65 times. Merged at 4 different actions 20 times. Widened at 1 different actions 1 times. Performed 122 root evaluator evaluations with a maximum evaluation depth of 8. Performed 122 inverse root evaluator evaluations with a maximum inverse evaluation depth of 8. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2019-09-16 17:04:08,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:08,153 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-16 17:04:08,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:04:08,153 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 17:04:08,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:08,179 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-16 17:04:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:08,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-16 17:04:08,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 17:04:08,256 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 17:04:08,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:04:08,282 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-16 17:04:08,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-16 17:04:08,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:04:08,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-16 17:04:08,382 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:08,382 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:04:08,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:04:08,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:04:08,383 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2019-09-16 17:04:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:08,453 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-09-16 17:04:08,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 17:04:08,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-09-16 17:04:08,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:08,455 INFO L225 Difference]: With dead ends: 21 [2019-09-16 17:04:08,455 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:04:08,455 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-09-16 17:04:08,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:04:08,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:04:08,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:04:08,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:04:08,459 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-09-16 17:04:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:08,459 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:04:08,459 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:04:08,459 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:04:08,460 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:04:08,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:04:08 BoogieIcfgContainer [2019-09-16 17:04:08,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:04:08,470 INFO L168 Benchmark]: Toolchain (without parser) took 2251.61 ms. Allocated memory was 131.1 MB in the beginning and 220.2 MB in the end (delta: 89.1 MB). Free memory was 86.5 MB in the beginning and 180.7 MB in the end (delta: -94.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 17:04:08,472 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 131.1 MB. Free memory was 105.2 MB in the beginning and 105.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:04:08,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.21 ms. Allocated memory is still 131.1 MB. Free memory was 86.3 MB in the beginning and 76.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:08,476 INFO L168 Benchmark]: Boogie Preprocessor took 123.69 ms. Allocated memory was 131.1 MB in the beginning and 199.2 MB in the end (delta: 68.2 MB). Free memory was 76.6 MB in the beginning and 175.5 MB in the end (delta: -98.9 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:08,478 INFO L168 Benchmark]: RCFGBuilder took 256.59 ms. Allocated memory is still 199.2 MB. Free memory was 175.5 MB in the beginning and 163.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:08,479 INFO L168 Benchmark]: TraceAbstraction took 1608.85 ms. Allocated memory was 199.2 MB in the beginning and 220.2 MB in the end (delta: 21.0 MB). Free memory was 163.0 MB in the beginning and 180.7 MB in the end (delta: -17.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:08,489 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 131.1 MB. Free memory was 105.2 MB in the beginning and 105.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 251.21 ms. Allocated memory is still 131.1 MB. Free memory was 86.3 MB in the beginning and 76.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.69 ms. Allocated memory was 131.1 MB in the beginning and 199.2 MB in the end (delta: 68.2 MB). Free memory was 76.6 MB in the beginning and 175.5 MB in the end (delta: -98.9 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 256.59 ms. Allocated memory is still 199.2 MB. Free memory was 175.5 MB in the beginning and 163.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1608.85 ms. Allocated memory was 199.2 MB in the beginning and 220.2 MB in the end (delta: 21.0 MB). Free memory was 163.0 MB in the beginning and 180.7 MB in the end (delta: -17.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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, 21 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 13 SDslu, 54 SDs, 0 SdLazy, 48 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 4457 SizeOfPredicates, 5 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...