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-new/gauss_sum.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:34:07,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:34:07,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:34:07,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-03 02:34:07,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:34:07,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:34:07,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:34:07,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-03 02:34:07,681 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:34:07,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:34:07,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:34:07,682 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:34:07,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:34:07,683 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:34:07,683 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:34:07,683 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:34:07,683 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:34:07,683 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:34:07,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:34:07,684 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:34:07,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:34:07,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:34:07,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:34:07,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:34:07,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:34:07,686 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:34:07,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:34:07,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:34:07,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:34:07,686 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:34:07,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:34:07,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:34:07,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:34:07,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:34:07,689 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:34:07,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:34:07,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:34:07,690 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:34:07,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:34:07,747 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:34:07,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:34:07,754 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:34:07,754 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:34:07,755 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2019-10-03 02:34:07,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b7fee8cf/f149a9169fc5403488943979a1105489/FLAG9c281e2aa [2019-10-03 02:34:08,205 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:34:08,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2019-10-03 02:34:08,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b7fee8cf/f149a9169fc5403488943979a1105489/FLAG9c281e2aa [2019-10-03 02:34:08,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b7fee8cf/f149a9169fc5403488943979a1105489 [2019-10-03 02:34:08,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:34:08,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:34:08,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:34:08,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:34:08,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:34:08,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:34:08" (1/1) ... [2019-10-03 02:34:08,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7926209b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:08, skipping insertion in model container [2019-10-03 02:34:08,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:34:08" (1/1) ... [2019-10-03 02:34:08,592 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:34:08,612 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:34:08,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:34:08,828 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:34:08,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:34:08,864 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:34:08,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:08 WrapperNode [2019-10-03 02:34:08,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:34:08,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:34:08,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:34:08,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:34:08,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:08" (1/1) ... [2019-10-03 02:34:08,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:08" (1/1) ... [2019-10-03 02:34:08,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:08" (1/1) ... [2019-10-03 02:34:08,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:08" (1/1) ... [2019-10-03 02:34:08,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:08" (1/1) ... [2019-10-03 02:34:08,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:08" (1/1) ... [2019-10-03 02:34:08,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:08" (1/1) ... [2019-10-03 02:34:08,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:34:08,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:34:08,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:34:08,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:34:08,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:08" (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 [2019-10-03 02:34:09,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:34:09,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:34:09,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:34:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:34:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-03 02:34:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-03 02:34:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 02:34:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:34:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:34:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:34:09,246 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:34:09,247 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-03 02:34:09,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:34:09 BoogieIcfgContainer [2019-10-03 02:34:09,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:34:09,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:34:09,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:34:09,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:34:09,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:34:08" (1/3) ... [2019-10-03 02:34:09,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cc158c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:34:09, skipping insertion in model container [2019-10-03 02:34:09,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:08" (2/3) ... [2019-10-03 02:34:09,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cc158c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:34:09, skipping insertion in model container [2019-10-03 02:34:09,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:34:09" (3/3) ... [2019-10-03 02:34:09,257 INFO L109 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+lhb-reducer.c [2019-10-03 02:34:09,267 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:34:09,279 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:34:09,314 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:34:09,364 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:34:09,364 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:34:09,364 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:34:09,364 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:34:09,364 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:34:09,365 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:34:09,365 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:34:09,365 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:34:09,382 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-10-03 02:34:09,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-03 02:34:09,393 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:34:09,394 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:34:09,400 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:34:09,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:34:09,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1720236422, now seen corresponding path program 1 times [2019-10-03 02:34:09,415 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:34:09,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:09,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:34:09,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:09,491 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:34:09,542 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-03 02:34:09,542 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-03 02:34:09,543 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) [2019-10-03 02:34:09,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:34:09,569 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-03 02:34:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:34:09,599 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-10-03 02:34:09,602 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-03 02:34:09,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:34:09,602 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) [2019-10-03 02:34:09,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:34:09,620 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-03 02:34:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:34:09,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-03 02:34:09,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-03 02:34:09,829 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 02:34:09,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:34:09,872 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-03 02:34:10,226 WARN L860 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) is different from true [2019-10-03 02:34:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:34:12,437 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:34:12,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9, 7] imperfect sequences [] total 14 [2019-10-03 02:34:12,438 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:34:12,446 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-03 02:34:12,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-03 02:34:12,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=4, NotChecked=22, Total=182 [2019-10-03 02:34:12,464 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 9 states. [2019-10-03 02:34:12,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:34:12,660 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2019-10-03 02:34:12,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-03 02:34:12,662 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2019-10-03 02:34:12,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:34:12,677 INFO L225 Difference]: With dead ends: 35 [2019-10-03 02:34:12,678 INFO L226 Difference]: Without dead ends: 18 [2019-10-03 02:34:12,684 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=4, NotChecked=24, Total=210 [2019-10-03 02:34:12,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-03 02:34:12,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-03 02:34:12,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-03 02:34:12,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-10-03 02:34:12,731 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2019-10-03 02:34:12,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:34:12,732 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-10-03 02:34:12,732 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-03 02:34:12,733 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-10-03 02:34:12,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-03 02:34:12,734 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:34:12,734 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:34:12,734 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:34:12,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:34:12,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1787659072, now seen corresponding path program 1 times [2019-10-03 02:34:12,735 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:34:12,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:12,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:34:12,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:12,738 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:34:12,768 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-03 02:34:12,769 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-03 02:34:12,769 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-03 02:34:12,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:34:12,790 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-10-03 02:34:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:34:12,804 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2019-10-03 02:34:12,807 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [16], [19], [22], [25], [28], [32], [34], [37], [38], [47], [48], [49] [2019-10-03 02:34:12,846 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:34:12,846 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:34:12,994 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-03 02:34:12,998 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. [2019-10-03 02:34:13,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:34:13,002 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-03 02:34:13,003 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:34:13,003 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 [2019-10-03 02:34:13,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:34:13,045 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-10-03 02:34:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:34:13,077 WARN L254 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 35 conjunts are in the unsatisfiable core [2019-10-03 02:34:13,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-03 02:34:13,182 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 02:34:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:34:13,203 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-03 02:34:15,476 WARN L860 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 2))) (or (= (+ (* 2 c_main_~main__sum~0) (* 6 c_main_~main__i~0) 6) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) is different from true [2019-10-03 02:34:17,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:34:17,578 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-03 02:34:17,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2019-10-03 02:34:17,579 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-10-03 02:34:17,580 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-03 02:34:17,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-03 02:34:17,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=4, NotChecked=24, Total=210 [2019-10-03 02:34:17,582 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 15 states. [2019-10-03 02:34:22,190 WARN L191 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 21 [2019-10-03 02:34:24,421 WARN L191 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 23 [2019-10-03 02:34:24,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:34:24,423 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-10-03 02:34:24,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-03 02:34:24,423 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 17 [2019-10-03 02:34:24,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:34:24,424 INFO L225 Difference]: With dead ends: 18 [2019-10-03 02:34:24,424 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:34:24,425 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=4, NotChecked=42, Total=552 [2019-10-03 02:34:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:34:24,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:34:24,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:34:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:34:24,426 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-10-03 02:34:24,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:34:24,427 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:34:24,427 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-03 02:34:24,427 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:34:24,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:34:24,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:34:24 BoogieIcfgContainer [2019-10-03 02:34:24,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:34:24,435 INFO L168 Benchmark]: Toolchain (without parser) took 15858.82 ms. Allocated memory was 132.6 MB in the beginning and 222.3 MB in the end (delta: 89.7 MB). Free memory was 88.4 MB in the beginning and 113.7 MB in the end (delta: -25.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. [2019-10-03 02:34:24,436 INFO L168 Benchmark]: CDTParser took 0.20 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. [2019-10-03 02:34:24,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.39 ms. Allocated memory is still 132.6 MB. Free memory was 88.0 MB in the beginning and 78.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-03 02:34:24,438 INFO L168 Benchmark]: Boogie Preprocessor took 123.93 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 78.2 MB in the beginning and 176.3 MB in the end (delta: -98.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2019-10-03 02:34:24,439 INFO L168 Benchmark]: RCFGBuilder took 258.99 ms. Allocated memory is still 199.2 MB. Free memory was 175.6 MB in the beginning and 162.2 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:34:24,440 INFO L168 Benchmark]: TraceAbstraction took 15183.08 ms. Allocated memory was 199.2 MB in the beginning and 222.3 MB in the end (delta: 23.1 MB). Free memory was 162.2 MB in the beginning and 113.7 MB in the end (delta: 48.4 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:34:24,444 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 288.39 ms. Allocated memory is still 132.6 MB. Free memory was 88.0 MB in the beginning and 78.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.93 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 78.2 MB in the beginning and 176.3 MB in the end (delta: -98.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 258.99 ms. Allocated memory is still 199.2 MB. Free memory was 175.6 MB in the beginning and 162.2 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15183.08 ms. Allocated memory was 199.2 MB in the beginning and 222.3 MB in the end (delta: 23.1 MB). Free memory was 162.2 MB in the beginning and 113.7 MB in the end (delta: 48.4 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. * 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. SAFE Result, 15.0s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 7.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 21 SDslu, 205 SDs, 0 SdLazy, 192 SolverSat, 20 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 13.6s 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, 0.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 62 ConstructedInterpolants, 11 QuantifiedInterpolants, 6885 SizeOfPredicates, 12 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...