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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:05:47,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:05:47,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:05:47,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:05:47,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:05:47,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:05:47,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:05:47,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:05:47,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:05:47,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:05:47,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:05:47,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:05:47,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:05:47,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:05:47,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:05:47,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:05:47,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:05:47,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:05:47,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:05:47,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:05:47,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:05:47,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:05:47,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:05:47,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:05:47,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:05:47,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:05:47,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:05:47,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:05:47,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:05:47,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:05:47,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:05:47,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:05:47,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:05:47,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:05:47,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:05:47,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:05:47,117 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:05:47,131 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:05:47,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:05:47,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:05:47,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:05:47,133 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:05:47,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:05:47,134 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:05:47,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:05:47,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:05:47,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:05:47,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:05:47,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:05:47,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:05:47,135 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:05:47,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:05:47,136 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:05:47,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:05:47,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:05:47,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:05:47,136 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:05:47,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:05:47,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:05:47,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:05:47,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:05:47,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:05:47,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:05:47,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:05:47,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:05:47,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:05:47,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:05:47,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:05:47,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:05:47,464 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:05:47,464 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:05:47,465 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2019-10-15 01:05:47,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22c77f592/2c7a9c0a27dc4505b681a878ee3a1055/FLAG9e49f70a8 [2019-10-15 01:05:48,015 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:05:48,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2019-10-15 01:05:48,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22c77f592/2c7a9c0a27dc4505b681a878ee3a1055/FLAG9e49f70a8 [2019-10-15 01:05:48,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22c77f592/2c7a9c0a27dc4505b681a878ee3a1055 [2019-10-15 01:05:48,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:05:48,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:05:48,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:05:48,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:05:48,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:05:48,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:05:48" (1/1) ... [2019-10-15 01:05:48,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c32c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:48, skipping insertion in model container [2019-10-15 01:05:48,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:05:48" (1/1) ... [2019-10-15 01:05:48,385 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:05:48,410 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:05:48,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:05:48,607 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:05:48,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:05:48,644 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:05:48,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:48 WrapperNode [2019-10-15 01:05:48,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:05:48,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:05:48,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:05:48,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:05:48,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:48" (1/1) ... [2019-10-15 01:05:48,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:48" (1/1) ... [2019-10-15 01:05:48,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:48" (1/1) ... [2019-10-15 01:05:48,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:48" (1/1) ... [2019-10-15 01:05:48,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:48" (1/1) ... [2019-10-15 01:05:48,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:48" (1/1) ... [2019-10-15 01:05:48,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:48" (1/1) ... [2019-10-15 01:05:48,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:05:48,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:05:48,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:05:48,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:05:48,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:05:48,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:05:48,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:05:48,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:05:48,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:05:48,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:05:48,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:05:48,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:05:48,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:05:48,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:05:48,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:05:49,034 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:05:49,034 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 01:05:49,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:05:49 BoogieIcfgContainer [2019-10-15 01:05:49,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:05:49,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:05:49,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:05:49,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:05:49,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:05:48" (1/3) ... [2019-10-15 01:05:49,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581fc72c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:05:49, skipping insertion in model container [2019-10-15 01:05:49,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:48" (2/3) ... [2019-10-15 01:05:49,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581fc72c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:05:49, skipping insertion in model container [2019-10-15 01:05:49,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:05:49" (3/3) ... [2019-10-15 01:05:49,044 INFO L109 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+lhb-reducer.c [2019-10-15 01:05:49,060 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:05:49,071 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:05:49,107 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:05:49,154 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:05:49,154 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:05:49,154 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:05:49,154 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:05:49,154 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:05:49,155 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:05:49,155 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:05:49,155 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:05:49,173 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-10-15 01:05:49,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 01:05:49,179 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:49,180 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:49,182 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:49,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:49,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1720236422, now seen corresponding path program 1 times [2019-10-15 01:05:49,195 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:49,195 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368642809] [2019-10-15 01:05:49,196 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:49,196 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:49,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:49,283 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:05:49,284 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019538634] [2019-10-15 01:05:49,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-15 01:05:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:49,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-15 01:05:49,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:05:49,535 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:05:49,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:49,574 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:05:49,651 WARN L860 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (or (= (* main_~main__n~0 (+ main_~main__n~0 1)) (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0))) (< c_main_~main__i~0 main_~main__n~0) (< main_~main__n~0 c_main_~main__i~0))) is different from true [2019-10-15 01:05:52,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:52,086 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368642809] [2019-10-15 01:05:52,086 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:05:52,087 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019538634] [2019-10-15 01:05:52,088 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:52,088 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2019-10-15 01:05:52,089 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542794853] [2019-10-15 01:05:52,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-15 01:05:52,097 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:52,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-15 01:05:52,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=105, Unknown=1, NotChecked=20, Total=156 [2019-10-15 01:05:52,117 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 13 states. [2019-10-15 01:05:52,658 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (* main_~main__n~0 (+ main_~main__n~0 1)) (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) (or (= (* c_main_~main__n~0 (+ c_main_~main__n~0 1)) (* 2 c_main_~main__sum~0)) (<= c_main_~main__i~0 c_main_~main__n~0))) is different from true [2019-10-15 01:05:52,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:52,875 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-10-15 01:05:52,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:05:52,878 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2019-10-15 01:05:52,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:52,891 INFO L225 Difference]: With dead ends: 45 [2019-10-15 01:05:52,892 INFO L226 Difference]: Without dead ends: 19 [2019-10-15 01:05:52,897 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=72, Invalid=276, Unknown=2, NotChecked=70, Total=420 [2019-10-15 01:05:52,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-15 01:05:52,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-15 01:05:52,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-15 01:05:52,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-10-15 01:05:52,932 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2019-10-15 01:05:52,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:52,933 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-10-15 01:05:52,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-15 01:05:52,933 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-10-15 01:05:52,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-15 01:05:52,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:52,934 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:53,138 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:05:53,139 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:53,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:53,140 INFO L82 PathProgramCache]: Analyzing trace with hash -417206074, now seen corresponding path program 1 times [2019-10-15 01:05:53,140 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:53,141 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542777079] [2019-10-15 01:05:53,141 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:53,141 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:53,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:53,170 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:05:53,170 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905367848] [2019-10-15 01:05:53,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:05:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:53,209 WARN L254 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 39 conjunts are in the unsatisfiable core [2019-10-15 01:05:53,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:05:53,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:05:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:53,359 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:05:53,658 WARN L860 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (* main_~main__n~0 (+ main_~main__n~0 1)) (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) is different from true [2019-10-15 01:05:55,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:05:55,848 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542777079] [2019-10-15 01:05:55,849 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:05:55,849 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905367848] [2019-10-15 01:05:55,849 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1436228792] [2019-10-15 01:05:55,856 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 19 [2019-10-15 01:05:55,893 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:05:55,893 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:05:56,034 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-15 01:05:56,037 INFO L272 AbstractInterpreter]: Visited 17 different actions 37 times. Merged at 4 different actions 20 times. Widened at 1 different actions 3 times. Performed 99 root evaluator evaluations with a maximum evaluation depth of 6. Performed 99 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 10 variables. [2019-10-15 01:05:56,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:56,047 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:05:56,048 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:05:56,048 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-10-15 01:05:56,048 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306209928] [2019-10-15 01:05:56,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:05:56,050 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:56,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:05:56,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=4, NotChecked=26, Total=240 [2019-10-15 01:05:56,051 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 16 states. [2019-10-15 01:05:56,565 WARN L860 $PredicateComparison]: unable to prove that (and (or (= (* c_main_~main__n~0 (+ c_main_~main__n~0 1)) (* 2 c_main_~main__sum~0)) (<= c_main_~main__i~0 c_main_~main__n~0)) (forall ((main_~main__n~0 Int)) (or (= (* main_~main__n~0 (+ main_~main__n~0 1)) (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0))) (< c_main_~main__i~0 main_~main__n~0) (< main_~main__n~0 c_main_~main__i~0)))) is different from true [2019-10-15 01:05:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:56,674 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-10-15 01:05:56,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 01:05:56,674 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2019-10-15 01:05:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:56,675 INFO L225 Difference]: With dead ends: 21 [2019-10-15 01:05:56,675 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:05:56,676 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=99, Invalid=410, Unknown=5, NotChecked=86, Total=600 [2019-10-15 01:05:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:05:56,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:05:56,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:05:56,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:05:56,677 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-10-15 01:05:56,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:56,678 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:05:56,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:05:56,678 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:05:56,678 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:05:56,881 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:05:56,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:05:59,173 WARN L191 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 46 DAG size of output: 19 [2019-10-15 01:05:59,175 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:05:59,175 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:05:59,176 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:05:59,176 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:05:59,176 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:05:59,176 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:05:59,176 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:05:59,176 INFO L443 ceAbstractionStarter]: For program point L64(line 64) no Hoare annotation was computed. [2019-10-15 01:05:59,176 INFO L443 ceAbstractionStarter]: For program point L62(lines 62 71) no Hoare annotation was computed. [2019-10-15 01:05:59,177 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 101) no Hoare annotation was computed. [2019-10-15 01:05:59,177 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 101) no Hoare annotation was computed. [2019-10-15 01:05:59,177 INFO L443 ceAbstractionStarter]: For program point L44(lines 44 78) no Hoare annotation was computed. [2019-10-15 01:05:59,177 INFO L443 ceAbstractionStarter]: For program point L40(lines 40 83) no Hoare annotation was computed. [2019-10-15 01:05:59,177 INFO L443 ceAbstractionStarter]: For program point L36(lines 36 88) no Hoare annotation was computed. [2019-10-15 01:05:59,177 INFO L443 ceAbstractionStarter]: For program point L32(lines 32 93) no Hoare annotation was computed. [2019-10-15 01:05:59,177 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 64) no Hoare annotation was computed. [2019-10-15 01:05:59,178 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 8 101) the Hoare annotation is: true [2019-10-15 01:05:59,178 INFO L443 ceAbstractionStarter]: For program point L28(lines 28 98) no Hoare annotation was computed. [2019-10-15 01:05:59,178 INFO L439 ceAbstractionStarter]: At program point L53(lines 45 74) the Hoare annotation is: (and (or (= (* main_~main__n~0 (+ main_~main__n~0 1)) (* 2 main_~main__sum~0)) (<= main_~main__i~0 main_~main__n~0)) (forall ((main_~main__n~0 Int)) (or (= (* main_~main__n~0 (+ main_~main__n~0 1)) (+ (* 2 main_~main__sum~0) (* 2 main_~main__i~0))) (< main_~main__i~0 main_~main__n~0) (< main_~main__n~0 main_~main__i~0)))) [2019-10-15 01:05:59,178 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 99) no Hoare annotation was computed. [2019-10-15 01:05:59,178 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 100) no Hoare annotation was computed. [2019-10-15 01:05:59,185 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 01:05:59,186 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 01:05:59,186 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 01:05:59,186 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 01:05:59,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 01:05:59,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 01:05:59,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 01:05:59,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 01:05:59,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:05:59 BoogieIcfgContainer [2019-10-15 01:05:59,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:05:59,200 INFO L168 Benchmark]: Toolchain (without parser) took 10836.37 ms. Allocated memory was 137.4 MB in the beginning and 231.7 MB in the end (delta: 94.4 MB). Free memory was 102.8 MB in the beginning and 88.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 108.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:59,202 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-15 01:05:59,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.82 ms. Allocated memory is still 137.4 MB. Free memory was 102.6 MB in the beginning and 92.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:59,204 INFO L168 Benchmark]: Boogie Preprocessor took 110.78 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 92.6 MB in the beginning and 179.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:59,205 INFO L168 Benchmark]: RCFGBuilder took 279.19 ms. Allocated memory is still 200.8 MB. Free memory was 179.8 MB in the beginning and 166.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:59,206 INFO L168 Benchmark]: TraceAbstraction took 10161.60 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 166.1 MB in the beginning and 88.6 MB in the end (delta: 77.5 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:59,211 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.82 ms. Allocated memory is still 137.4 MB. Free memory was 102.6 MB in the beginning and 92.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.78 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 92.6 MB in the beginning and 179.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 279.19 ms. Allocated memory is still 200.8 MB. Free memory was 179.8 MB in the beginning and 166.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10161.60 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 166.1 MB in the beginning and 88.6 MB in the end (delta: 77.5 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 64]: 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 - InvariantResult [Line: 45]: Loop Invariant [2019-10-15 01:05:59,221 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 01:05:59,221 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 01:05:59,221 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 01:05:59,222 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 01:05:59,222 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 01:05:59,222 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 01:05:59,223 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 01:05:59,223 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] Derived loop invariant: (main__n * (main__n + 1) == 2 * main__sum || main__i <= main__n) && (forall main_~main__n~0 : int :: (main_~main__n~0 * (main_~main__n~0 + 1) == 2 * main__sum + 2 * main__i || main__i < main_~main__n~0) || main_~main__n~0 < main__i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. Result: SAFE, OverallTime: 10.0s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.2s, HoareTripleCheckerStatistics: 35 SDtfs, 44 SDslu, 130 SDs, 0 SdLazy, 206 SolverSat, 25 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 39 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 126 FormulaSimplificationTreeSizeReductionInter, 2.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 64 ConstructedInterpolants, 12 QuantifiedInterpolants, 7557 SizeOfPredicates, 12 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...