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 0.1.24-0883e75 [2019-09-05 13:06:54,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 13:06:54,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 13:06:54,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-05 13:06:54,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 13:06:54,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 13:06:54,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 13:06:54,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-05 13:06:54,601 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 13:06:54,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 13:06:54,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-05 13:06:54,602 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-05 13:06:54,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-05 13:06:54,603 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-05 13:06:54,603 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-05 13:06:54,604 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-05 13:06:54,604 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-05 13:06:54,604 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-05 13:06:54,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 13:06:54,605 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 13:06:54,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 13:06:54,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 13:06:54,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 13:06:54,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 13:06:54,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 13:06:54,606 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 13:06:54,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 13:06:54,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 13:06:54,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 13:06:54,607 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-05 13:06:54,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 13:06:54,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 13:06:54,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 13:06:54,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 13:06:54,608 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-05 13:06:54,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 13:06:54,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 13:06:54,608 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-05 13:06:54,640 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 13:06:54,650 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 13:06:54,653 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 13:06:54,654 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 13:06:54,654 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 13:06:54,655 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2019-09-05 13:06:54,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2686a0237/fad7be3a45d54987b0b07ffc318495da/FLAGa3c5e1eaf [2019-09-05 13:06:55,145 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 13:06:55,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2019-09-05 13:06:55,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2686a0237/fad7be3a45d54987b0b07ffc318495da/FLAGa3c5e1eaf [2019-09-05 13:06:55,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2686a0237/fad7be3a45d54987b0b07ffc318495da [2019-09-05 13:06:55,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 13:06:55,562 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 13:06:55,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 13:06:55,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 13:06:55,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 13:06:55,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:06:55" (1/1) ... [2019-09-05 13:06:55,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1896e9f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:06:55, skipping insertion in model container [2019-09-05 13:06:55,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:06:55" (1/1) ... [2019-09-05 13:06:55,579 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 13:06:55,600 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 13:06:55,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:06:55,776 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 13:06:55,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:06:55,809 INFO L192 MainTranslator]: Completed translation [2019-09-05 13:06:55,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:06:55 WrapperNode [2019-09-05 13:06:55,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 13:06:55,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 13:06:55,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 13:06:55,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 13:06:55,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:06:55" (1/1) ... [2019-09-05 13:06:55,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:06:55" (1/1) ... [2019-09-05 13:06:55,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:06:55" (1/1) ... [2019-09-05 13:06:55,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:06:55" (1/1) ... [2019-09-05 13:06:55,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:06:55" (1/1) ... [2019-09-05 13:06:55,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:06:55" (1/1) ... [2019-09-05 13:06:55,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:06:55" (1/1) ... [2019-09-05 13:06:55,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 13:06:55,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 13:06:55,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 13:06:55,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 13:06:55,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:06:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 13:06:56,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 13:06:56,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 13:06:56,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 13:06:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 13:06:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 13:06:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 13:06:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-05 13:06:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 13:06:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 13:06:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 13:06:56,212 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 13:06:56,213 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-05 13:06:56,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:06:56 BoogieIcfgContainer [2019-09-05 13:06:56,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 13:06:56,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 13:06:56,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 13:06:56,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 13:06:56,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 01:06:55" (1/3) ... [2019-09-05 13:06:56,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a4c4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:06:56, skipping insertion in model container [2019-09-05 13:06:56,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:06:55" (2/3) ... [2019-09-05 13:06:56,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a4c4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:06:56, skipping insertion in model container [2019-09-05 13:06:56,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:06:56" (3/3) ... [2019-09-05 13:06:56,228 INFO L109 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+lhb-reducer.c [2019-09-05 13:06:56,250 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 13:06:56,268 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 13:06:56,290 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 13:06:56,321 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 13:06:56,322 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-05 13:06:56,322 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 13:06:56,322 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 13:06:56,322 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 13:06:56,322 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 13:06:56,322 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 13:06:56,323 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 13:06:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-09-05 13:06:56,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-05 13:06:56,349 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:06:56,350 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:06:56,352 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:06:56,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:06:56,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1720236422, now seen corresponding path program 1 times [2019-09-05 13:06:56,361 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:06:56,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:06:56,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:06:56,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:06:56,405 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:06:56,452 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:06:56,453 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:06:56,453 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 [2019-09-05 13:06:56,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:06:56,470 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:06:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:06:56,491 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-05 13:06:56,493 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-05 13:06:56,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:06:56,493 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 13:06:56,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:06:56,512 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-05 13:06:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:06:56,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 31 conjunts are in the unsatisfiable core [2019-09-05 13:06:56,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:06:56,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:06:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:06:56,756 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:06:57,071 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 [2019-09-05 13:06:59,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-05 13:06:59,854 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:06:59,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2019-09-05 13:06:59,854 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:06:59,859 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-05 13:06:59,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-05 13:06:59,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=105, Unknown=1, NotChecked=20, Total=156 [2019-09-05 13:06:59,877 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 9 states. [2019-09-05 13:07:00,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:07:00,083 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2019-09-05 13:07:00,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-05 13:07:00,086 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2019-09-05 13:07:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:07:00,095 INFO L225 Difference]: With dead ends: 35 [2019-09-05 13:07:00,095 INFO L226 Difference]: Without dead ends: 18 [2019-09-05 13:07:00,098 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=36, Invalid=123, Unknown=1, NotChecked=22, Total=182 [2019-09-05 13:07:00,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-05 13:07:00,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-05 13:07:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-05 13:07:00,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-09-05 13:07:00,131 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2019-09-05 13:07:00,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:07:00,131 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-09-05 13:07:00,132 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-05 13:07:00,132 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-09-05 13:07:00,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-05 13:07:00,133 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:07:00,133 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:07:00,133 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:07:00,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:07:00,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1787659072, now seen corresponding path program 1 times [2019-09-05 13:07:00,134 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:07:00,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:07:00,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:07:00,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:07:00,136 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:07:00,151 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:07:00,151 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:07:00,151 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 [2019-09-05 13:07:00,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:07:00,163 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:07:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:07:00,185 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2019-09-05 13:07:00,187 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [16], [19], [22], [25], [28], [32], [34], [37], [38], [47], [48], [49] [2019-09-05 13:07:00,245 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-05 13:07:00,246 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-05 13:07:00,413 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-05 13:07:00,416 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. [2019-09-05 13:07:00,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:07:00,421 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-05 13:07:00,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:07:00,421 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 [2019-09-05 13:07:00,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:07:00,441 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-05 13:07:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:07:00,474 WARN L254 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 35 conjunts are in the unsatisfiable core [2019-09-05 13:07:00,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:07:00,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:07:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:07:00,599 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:07:00,792 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 [2019-09-05 13:07:01,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:07:01,184 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 13:07:01,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2019-09-05 13:07:01,185 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-05 13:07:01,186 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-05 13:07:01,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-05 13:07:01,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=141, Unknown=3, NotChecked=24, Total=210 [2019-09-05 13:07:01,187 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 15 states. [2019-09-05 13:07:01,578 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2019-09-05 13:07:02,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:07:02,015 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-09-05 13:07:02,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-05 13:07:02,015 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 17 [2019-09-05 13:07:02,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:07:02,017 INFO L225 Difference]: With dead ends: 24 [2019-09-05 13:07:02,017 INFO L226 Difference]: Without dead ends: 21 [2019-09-05 13:07:02,018 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=371, Unknown=4, NotChecked=82, Total=552 [2019-09-05 13:07:02,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-05 13:07:02,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-05 13:07:02,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-05 13:07:02,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-09-05 13:07:02,022 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2019-09-05 13:07:02,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:07:02,022 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-09-05 13:07:02,023 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-05 13:07:02,023 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-09-05 13:07:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-05 13:07:02,023 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:07:02,024 INFO L399 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:07:02,024 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:07:02,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:07:02,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1505077242, now seen corresponding path program 2 times [2019-09-05 13:07:02,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:07:02,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:07:02,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:07:02,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:07:02,025 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:07:02,039 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:07:02,040 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:07:02,040 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 13:07:02,075 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-05 13:07:02,075 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:07:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:07:02,094 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-05 13:07:02,094 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-05 13:07:02,094 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:07:02,094 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 13:07:02,111 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-05 13:07:02,111 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-05 13:07:02,135 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-09-05 13:07:02,135 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-05 13:07:02,136 WARN L254 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 47 conjunts are in the unsatisfiable core [2019-09-05 13:07:02,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:07:02,275 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:07:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:07:02,294 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:07:02,350 WARN L860 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) is different from true [2019-09-05 13:07:02,461 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 [2019-09-05 13:07:02,568 WARN L860 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 4))) (or (< .cse0 main_~main__n~0) (< main_~main__n~0 .cse0) (= (* (+ main_~main__n~0 1) main_~main__n~0) (+ (* 2 c_main_~main__sum~0) (* 10 c_main_~main__i~0) 20))))) is different from true [2019-09-05 13:07:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 7 not checked. [2019-09-05 13:07:02,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 13:07:02,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2019-09-05 13:07:02,810 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-05 13:07:02,813 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-05 13:07:02,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-05 13:07:02,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=240, Unknown=7, NotChecked=102, Total=420 [2019-09-05 13:07:02,815 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 21 states. [2019-09-05 13:07:02,993 WARN L860 $PredicateComparison]: unable to prove that (and (= 4 c_main_~main__i~0) (= (* 2 c_main_~main__i~0) (+ c_main_~main__sum~0 2)) (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 4))) (or (< .cse0 main_~main__n~0) (< main_~main__n~0 .cse0) (= (* (+ main_~main__n~0 1) main_~main__n~0) (+ (* 2 c_main_~main__sum~0) (* 10 c_main_~main__i~0) 20))))) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2019-09-05 13:07:03,583 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 3))) (or (< .cse0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 8 c_main_~main__i~0) 12) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0)))) (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2019-09-05 13:07:03,726 WARN L860 $PredicateComparison]: unable to prove that (and (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)))) (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2019-09-05 13:07:03,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:07:03,728 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-09-05 13:07:03,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-05 13:07:03,728 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 20 [2019-09-05 13:07:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:07:03,729 INFO L225 Difference]: With dead ends: 22 [2019-09-05 13:07:03,729 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 13:07:03,730 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=528, Unknown=10, NotChecked=318, Total=992 [2019-09-05 13:07:03,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 13:07:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 13:07:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 13:07:03,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 13:07:03,730 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-09-05 13:07:03,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:07:03,731 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 13:07:03,731 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-05 13:07:03,731 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 13:07:03,731 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 13:07:03,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 01:07:03 BoogieIcfgContainer [2019-09-05 13:07:03,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 13:07:03,741 INFO L168 Benchmark]: Toolchain (without parser) took 8178.68 ms. Allocated memory was 133.2 MB in the beginning and 257.9 MB in the end (delta: 124.8 MB). Free memory was 88.2 MB in the beginning and 174.1 MB in the end (delta: -85.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 7.1 GB. [2019-09-05 13:07:03,742 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 133.2 MB. Free memory was 106.2 MB in the beginning and 106.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 13:07:03,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.50 ms. Allocated memory is still 133.2 MB. Free memory was 88.0 MB in the beginning and 78.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-09-05 13:07:03,744 INFO L168 Benchmark]: Boogie Preprocessor took 138.82 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 78.1 MB in the beginning and 177.3 MB in the end (delta: -99.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-05 13:07:03,745 INFO L168 Benchmark]: RCFGBuilder took 265.45 ms. Allocated memory is still 200.8 MB. Free memory was 177.3 MB in the beginning and 163.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-09-05 13:07:03,746 INFO L168 Benchmark]: TraceAbstraction took 7523.32 ms. Allocated memory was 200.8 MB in the beginning and 257.9 MB in the end (delta: 57.1 MB). Free memory was 163.8 MB in the beginning and 174.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2019-09-05 13:07:03,750 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 133.2 MB. Free memory was 106.2 MB in the beginning and 106.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 245.50 ms. Allocated memory is still 133.2 MB. Free memory was 88.0 MB in the beginning and 78.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.82 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 78.1 MB in the beginning and 177.3 MB in the end (delta: -99.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 265.45 ms. Allocated memory is still 200.8 MB. Free memory was 177.3 MB in the beginning and 163.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7523.32 ms. Allocated memory was 200.8 MB in the beginning and 257.9 MB in the end (delta: 57.1 MB). Free memory was 163.8 MB in the beginning and 174.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 46.8 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, 7.4s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 SDtfs, 21 SDslu, 253 SDs, 0 SdLazy, 333 SolverSat, 34 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 54 SyntacticMatches, 8 SemanticMatches, 64 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 5.3s 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 100 ConstructedInterpolants, 20 QuantifiedInterpolants, 13342 SizeOfPredicates, 18 NumberOfNonLiveVariables, 220 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/22 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...